Add release branch workflow

Author: mx-moth

.github/workflows/release-branch.yaml

@@ -0,0 +1,44 @@
+name: Prerelease checks
+on:
+  pull_request:
+    branches:
+      - "release-*"
+
+  workflow_dispatch:
+
+env:
+  python-version: "3.11"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    outputs:
+      artifact-name: ${{ steps.build.outputs.artifact-name }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ./.github/actions/build-python-package
+        id: build
+        with:
+          python-version: ${{ env.python-version }}
+
+  build_conda:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    needs: ['build']
+    continue-on-error: true
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/checkout@v3
+        with:
+          repository: conda-forge/emsarray-feedstock
+          path: emsarray-feedstock
+
+      - uses: ./.github/actions/environment
+        with:
+          python-version: ${{ env.python-version }}
+          package-artifact-name: ${{ needs.build.outputs.artifact-name }}
+
+      - run: |
+          conda install conda-build
+          ./scripts/build-local-conda-package.sh