chore: add release template

Author: thunderbiscuit

.github/ISSUE_TEMPLATE/release.md

@@ -0,0 +1,37 @@
+---
+name: "Release"
+about: "Create a new release [for release managers only]"
+title: "Release MAJOR.MINOR.PATCH"
+---
+
+- [ ] Bump the bdk-ffi submodule to the release tag in bdk-ffi.
+- [ ] Delete the `dist`, `build`, and `bdkpython.egg-info` and rust `target` directories to make sure you are building the library from scratch without any caches.
+- [ ] Start the virtual environment.
+- [ ] Build the library.
+
+```shell
+just clean
+source .localpythonenv/bin/activate
+pip install --requirement requirements.txt
+bash ./scripts/generate-macos-arm64.sh # run the script for your particular platform
+just build
+```
+
+- [ ] Run the tests and adjust if necessary
+
+```shell
+pip3 install ./dist/bdkpython-<yourversion>-py3-none-any.whl --force-reinstall
+python -m unittest --verbose
+```
+
+- [ ] Update the readme if necessary
+- [ ] Create a new branch off of `master` called `release/<feature version>`, e.g. `release/0.31`
+- [ ] Update library version from `.dev` version to release version
+- [ ] Create the tag for the release and make sure to add a link to the bdk-ffi changelog to the tag. Push the tag to GitHub.
+
+```shell
+git tag v0.6.0 --sign --edit
+git push upstream v0.6.0
+```
+
+- [ ] Trigger release through the workflow dispatch with the new tag.