Add bug issue templates (payjoin#758)

Copied and made modifications to Bitcoin Core's
[bug](https://github.com/bitcoin/bitcoin/blob/master/.github/ISSUE_TEMPLATE/bug.yml)
issue template where appropriate initially.

At @nothingmuch's suggestion, split this into two issue templates:
- `bug-payjoin-crate.yml`, for issues relating to the `payjoin` crate
- `bug-general.yml` for all other issues for other crates

The former focuses on knowing whether the user is using FFI, includes a
dropdown for language choice, asks what feature flags are enabled, etc.

The latter focuses more on how they obtained it (binary, compiled from
source, etc.) and information about the environment.

Author: thebrandonlucas

.github/ISSUE_TEMPLATE/bug-general.yml

@@ -0,0 +1,104 @@
+name: General Bug Report
+description: Submit a new bug report
+labels: [bug]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ### This issue tracker is only for technical issues related to the following crates:
+        - [`payjoin-cli`](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-cli)
+        - [`payjoin-directory`](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-directory)
+        - [`payjoin-test-utils`](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-test-utils)
+        - [`payjoin-ffi`](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-ffi)
+
+        ### For bugs relating to the [payjoin](https://github.com/payjoin/rust-payjoin/tree/master/payjoin) crate, [see here](./bug-payjoin-crate.yml).
+
+        ----
+  - type: checkboxes
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please search to see if an issue already exists for the bug you encountered.
+      options:
+        - label: I have searched the existing issues
+          required: true
+  - type: dropdown
+    attributes:
+      label: Which crate is this issue for?
+      multiple: false
+      options:
+        - payjoin-cli
+        - payjoin-directory
+        - payjoin-test-utils
+        - payjoin-ffi
+  - type: dropdown
+    attributes:
+      label: How did you obtain this crate?
+      multiple: false
+      options:
+        - Compiled from source
+        - Pre-built binaries
+        - Package manager
+        - Docker Image
+        - Other
+    validations:
+      required: true
+  - type: textarea
+    id: features
+    attributes:
+      label: Features
+      description: |
+        If you selected "Compiled from source" what features did you use?
+    validations:
+      required: false
+  - type: input
+    id: pdk-version
+    attributes:
+      label: What version of the selected crate are you using?
+      description:
+        Run `payjoin-cli --version` or `payjoin-directory --version` for the binaries.
+        For the library crates (`payjoin-test-utils`, and `payjoin-ffi`),
+        check your respective package manager file to see which version you have installed.
+      placeholder: e.g. payjoin-0.23.0 or master@ceef77b
+    validations:
+      required: true
+  - type: textarea
+    id: current-behavior
+    attributes:
+      label: Current behavior
+      description: Tell us what went wrong
+    validations:
+      required: true
+  - type: textarea
+    id: expected-behavior
+    attributes:
+      label: Expected behavior
+      description: Tell us what you expected to happen
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction-steps
+    attributes:
+      label: Steps to reproduce
+      description: |
+        Tell us how to reproduce your bug. Please attach related screenshots if necessary.
+        * Run-time or compile-time configuration options
+        * Actions taken
+    validations:
+      required: true
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant log output
+      description: |
+        Please copy and paste any relevant log output.
+
+        Please be aware that the log might contain personally identifying information.
+    validations:
+      required: false
+  - type: input
+    id: os
+    attributes:
+      label: Operating system and version
+      placeholder: e.g. "MacOS Ventura 13.2" or "Ubuntu 22.04 LTS"
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/bug-payjoin-crate.yml

@@ -0,0 +1,83 @@
+name: payjoin crate bug report
+description: Submit a new bug report for the payjoin crate
+labels: [bug]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## This issue tracker is only for technical issues related to the [payjoin](https://github.com/payjoin/rust-payjoin/tree/master/payjoin) crate.
+
+        ## Bugs for all other crates should [this template](./bug-general.yml).
+
+        ----
+  - type: checkboxes
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please search to see if an issue already exists for the bug you encountered.
+      options:
+        - label: I have searched the existing issues
+          required: true
+  - type: checkboxes
+    attributes:
+      label: Are you using payjoin-ffi?
+      options:
+        - label: Yes I am
+          required: false
+  - type: dropdown
+    attributes:
+      label: If so, which host language?
+      multiple: false
+      options:
+        - python
+        - other
+    validations:
+      required: false
+  - type: textarea
+    id: features
+    attributes:
+      label: Did you enable any features on the crate?
+      description: e.g. `v2`
+    validations:
+      required: false
+  - type: input
+    id: pdk-version
+    attributes:
+      label: What version of the payjoin crate are you using?
+      description: Check your respective package manager file to see which version you have installed.
+      placeholder: e.g. payjoin-0.23.0 or master@ceef77b
+    validations:
+      required: true
+  - type: textarea
+    id: current-behavior
+    attributes:
+      label: Current behavior
+      description: Tell us what went wrong
+    validations:
+      required: true
+  - type: textarea
+    id: expected-behavior
+    attributes:
+      label: Expected behavior
+      description: Tell us what you expected to happen
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction-steps
+    attributes:
+      label: Steps to reproduce
+      description: |
+        Tell us how to reproduce your bug. Please attach related screenshots if necessary.
+        * Run-time or compile-time configuration options
+        * Actions taken
+    validations:
+      required: true
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant log output
+      description: |
+        Please copy and paste any relevant log output. This can be enabled by prefixing `RUST_LOG=debug cargo run ...`
+
+        Please be aware that the log might contain personally identifying information.
+    validations:
+      required: false