Feature/mx1551 GitHub release pipeline (#20)

# PR Context
<!-- Additional info for the reviewer -->

# Added
<!-- New features and interfaces -->

- pdm release plugin as additional requirement for template packages
- github action for releasing a new version in template packages

CHANGELOG.md

@@ -10,6 +10,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - configure renovatebot for mex-template itself
+- pdm release plugin as additional requirement for template packages
+- github action for releasing a new version in template packages
 
 ### Changes
 

mex-{{ cookiecutter.project_name }}/.github/workflows/release.yml

@@ -0,0 +1,62 @@
+name: Release
+
+run-name: release version {% raw %}${{ inputs.version }} by @${{ github.actor }}{% endraw %}
+
+on:
+  workflow_dispatch:
+    branches: ["main"]
+    inputs:
+      version:
+        type: choice
+        description: 'part of the project version to update'
+        options:
+        - major
+        - minor
+        - patch
+        required: true
+
+env:
+  PIP_NO_OPTION: on
+  PIP_NO_CLEAN: on
+  PIP_PREFER_BINARY: on
+
+permissions:
+  contents: write
+
+concurrency:
+  group: "release"
+  cancel-in-progress: false
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Cache requirements
+        uses: actions/cache@v4
+        env:
+          cache-name: cache-requirements
+        with:
+          path: ~/.cache/pip
+          {% raw %}key: ${{ env.cache-name }}-${{ hashFiles('requirements.txt') }}{% endraw %}
+          restore-keys: |
+            {% raw %}${{ env.cache-name }}-{% endraw %}
+
+      - name: Setup python
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.11
+
+      - name: Install requirements
+        run: make setup
+
+      - name: Release new version
+        run: |
+          git config --global user.name 'RKIMetadataExchange'
+          git config --global user.email '[email protected]'
+          pdm release {% raw %}${{ inputs.version }}{% endraw %}

mex-{{ cookiecutter.project_name }}/README.md

@@ -76,10 +76,8 @@ components of the MEx project are open-sourced under the same license as well.
 
 ### creating release
 
-- update version in `pyproject.toml` and `CHANGELOG.md`
-- commit update `git commit --message "..."`
-- create a tag `git tag ...`
-- push `git push --follow-tags`
+- run `pdm release RULE` to release a new version where RULE determines which part of 
+the version to update and is one of `major`, `minor`, `patch`.
 
 ### container workflow
 

mex-{{ cookiecutter.project_name }}/requirements.txt

@@ -1,4 +1,5 @@
 cruft==2.15.0
+mex-release @ git+https://github.com/robert-koch-institut/mex-release.git
 pdm==2.15.3
 pre-commit==3.7.1
 wheel==0.43.0