Update release template

.github/ISSUE_TEMPLATE/release.md

@@ -0,0 +1,39 @@
+---
+name: Release
+about: Create an issue to track a release process.
+title: "Release x.x.x"
+labels: [ "task/release", "scope/core" ]
+assignees: ""
+---
+
+# Release
+
+## Work Breakdown
+
+Feel free to edit this release checklist in-progress depending on what tasks need to be done:
+
+- [ ] Decide a release version. The version must be the eclipse EDC version `X.Y.Z` appended with the sovity fork version `.W`. eg `0.2.1.1`.
+- [ ] Update the `version` in `gradle.properties`
+- [ ] Update this issue's title to the new version.
+- [ ] `release-prep` PR:
+    - [ ] Update the `CHANGELOG.md`.
+        - [ ] Add a clean `Unreleased` version.
+        - [ ] Add the version to the old section.
+        - [ ] Add the current date to the old version.
+        - [ ] Check the commit history for commits that might be product-relevant and thus should be added to the changelog. Maybe they were forgotten.
+        - [ ] Write or review the `Deployment Migration Notes` section, check the commit history for changed / added
+          configuration properties.
+        - [ ] Write or review a release summary.
+        - [ ] Write or review the compatible versions section.
+        - [ ] Remove empty sections from the patch notes.
+    - [ ] Merge the `release-prep` PR.
+- [ ] Wait for the main branch to be green. You can check the status in GH [actions](https://github.com/sovity/core-edc/actions).
+- [ ] [Create a release](https://github.com/sovity/core-edc/releases/new)
+    - [ ] In `Choose the tag`, type your new release version in the format `vx.y.z.w` (for instance `v1.2.3.4`) then
+      click `+Create new tag vx.y.z.w on release`.
+    - [ ] Re-use the changelog section as release description, and the version as title.
+- [ ] Check if the pipeline built the release versions in the Actions-Section (or you won't see it).
+- [ ] Revisit the changed list of tasks and compare it
+  with [.github/ISSUE_TEMPLATE/release.md](https://github.com/sovity/edc-extensions/blob/default/.github/ISSUE_TEMPLATE/release.md).
+  Propose changes where it makes sense.
+- [ ] Close this issue.