Implement versioning ADR (#321)

* update renovate

* add release workflow

* document versioning

---------

Co-authored-by: joshmeranda <joshua.meranda@gmail.com>

.github/renovate.json

@@ -3,7 +3,7 @@
     "github>rancher/renovate-config#release"
   ],
   "baseBranches": [
-    "main"
+    "main", "release/v0.4", "release/v0.3", "release/v0.2", "release/v0.1"
   ],
   "prHourlyLimit": 2
 }

.github/workflows/release.yaml

@@ -0,0 +1,21 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - v*
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+        contents: write
+    steps:
+    - name : Checkout repository
+      uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+
+    - name: Create release on Github
+      run: |
+        gh --repo "${{ github.repository }}" release create ${{ github.ref_name }} --verify-tag --generate-notes
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

README.md

@@ -813,3 +813,8 @@ Before running the tests, you must run the following command to setup the fake s
 # current client-go version, as seen in scripts/test.sh
 export KUBEBUILDER_ASSETS=$(setup-envtest use -p path)
 ```
+
+# Versioning
+
+See [VERSION.md](VERSION.md).
+

VERSION.md

@@ -0,0 +1,9 @@
+Steve follows a pre-release (v0.x) strategy of semver. There is no compatibility between releases, and new releases are meant to be strictly compatible with a single version of Rancher. The current supported versions of Steve are as follows:
+
+| Steve Branch | Steve Minor version | Matching Rancher Version |
+|--------------------------|------------------------------------|------------------------------------------------|
+| main | v0.5 | v2.11 |
+| release/v0.4 | v0.4 | v2.10 |
+| release/v0.3 | v0.3 | v2.9 |
+| release/v0.2 | v0.2 | v2.8 |
+| release/v0.1 | v0.1 | v2.7 |