Use GitHub Issue forms

Update issues to use [GitHub Issue forms](https://docs.github.com/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository#creating-issue-forms).

Contributes to martincostello/repo-migrations#94.

Signed-off-by: costellobot[bot] <102247573+costellobot[bot]@users.noreply.github.com>

Author: costellobot[bot]

.github/ISSUE_TEMPLATE/10_bug_report.yml

@@ -0,0 +1,74 @@
+name: 🐛 Bug report
+description: Something not behaving as expected?
+title: '[Bug]: '
+labels: ['bug']
+body:
+- type: markdown
+  attributes:
+    value: |
+      Please check for an existing issue and the [README](https://github.com/martincostello/aspnetcore-openapi/blob/main/README.md) before submitting a bug report.
+
+      If you're not using the latest release, please try upgrading to the latest version first to see if the issue resolves itself.
+- type: input
+  attributes:
+    label: Version
+    description: Which version of the application are you experiencing the issue with?
+    placeholder: 1.0.0
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Describe the bug
+    description: A clear and concise description of what the bug is.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Expected behaviour
+    description: A clear and concise description of what you expected to happen.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Actual behaviour
+    description: What actually happens.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Steps to reproduce
+    description: |
+      Provide a link to a [minimalistic project which reproduces this issue (repro)](https://stackoverflow.com/help/mcve) hosted in a **public** GitHub repository.
+      Code snippets, such as a failing unit test or small console app, which demonstrate the issue wrapped in a [fenced code block](https://docs.github.com/get-started/writing-on-github/working-with-advanced-formatting/creating-and-highlighting-code-blocks) are also acceptable.
+
+      This issue will be closed if:
+      - The behaviour you're reporting cannot be easily reproduced.
+      - The issue is a duplicate of an existing issue.
+      - The behaviour you're reporting is by design.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Exception(s) (if any)
+    description: Include any exception(s) and/or stack trace(s) you get when facing this issue.
+    render: text
+  validations:
+    required: false
+- type: input
+  attributes:
+    label: .NET Version
+    description: |
+      Run `dotnet --version` to get the .NET SDK version you're using.
+      Alternatively, which target framework(s) (e.g. `net8.0`) does the project you're using the package with target?
+    placeholder: 9.0.100
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Anything else?
+    description: |
+      Links? References? Anything that will give us more context about the issue you are encountering is useful.
+
+      💡Tip: You can attach images or log files by clicking this area to highlight it and then dragging files in.
+  validations:
+    required: false

.github/ISSUE_TEMPLATE/20_feature_request.yml

@@ -0,0 +1,30 @@
+name: 💡 Feature request
+description: Suggest a feature request or improvement
+title: '[Feature request]: '
+labels: ['feature-request']
+body:
+- type: markdown
+  attributes:
+    value: |
+      Please check for an existing issue and the [README](https://github.com/martincostello/aspnetcore-openapi/blob/main/README.md) before submitting a feature request.
+- type: textarea
+  attributes:
+    label: Is your feature request related to a specific problem? Or an existing feature?
+    description: A clear and concise description of what the problem is. Motivating examples help prioritise things.
+    placeholder: I am trying to [...] but [...]
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Describe the solution you'd like
+    description: |
+      A clear and concise description of what you want to happen. Include any alternative solutions you've considered.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Additional context
+    description: |
+      Add any other context or screenshots about the feature request here.
+  validations:
+    required: false

.github/ISSUE_TEMPLATE/30_question.yml

@@ -0,0 +1,31 @@
+name: 🤔 Question?
+description: You have something specific to achieve and the existing documentation hasn't covered how.
+title: '[Question]: '
+labels: ['question']
+body:
+- type: markdown
+  attributes:
+    value: |
+      Please check for an existing issue and the [README](https://github.com/martincostello/aspnetcore-openapi/blob/main/README.md) before asking a question.
+- type: textarea
+  attributes:
+    label: What do you want to achieve?
+    description: A clear and concise description of what you're trying to do.
+    placeholder: I am trying to [...] but [...]
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: What code or approach do you have so far?
+    description: |
+      Provide a [minimalistic project which shows what you have so far](https://stackoverflow.com/help/mcve) hosted in a **public** GitHub repository.
+      Code snippets wrapped in a [fenced code block](https://docs.github.com/get-started/writing-on-github/working-with-advanced-formatting/creating-and-highlighting-code-blocks) are also acceptable.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Additional context
+    description: |
+      Add any other context or screenshots related to your question here.
+  validations:
+    required: false