Workflows: Sync assets to plugin repo upon change in trunk (#68052)

Sync the `assets/` directory to the plugin svn repo whenever a file in that directory is changed as part of a commit to `trunk`

Co-authored-by: ockham <[email protected]>
Co-authored-by: sirreal <[email protected]>
Co-authored-by: mcsf <[email protected]>
Co-authored-by: bph <[email protected]>

.github/workflows/sync-assets-to-plugin-repo.yml

@@ -0,0 +1,48 @@
+name: Sync Gutenberg plugin assets to WordPress.org plugin repo
+
+on:
+    push:
+        branches:
+            - trunk
+        paths:
+            - assets/**
+
+jobs:
+    sync-assets:
+        name: Sync assets to WordPress.org plugin repo
+        runs-on: ubuntu-latest
+        environment: wp.org plugin
+        env:
+            PLUGIN_REPO_URL: 'https://plugins.svn.wordpress.org/gutenberg'
+            SVN_USERNAME: ${{ secrets.SVN_USERNAME }}
+            SVN_PASSWORD: ${{ secrets.SVN_PASSWORD }}
+
+        steps:
+            - name: Check out Gutenberg assets folder from WP.org plugin repo
+              run: |
+                  svn checkout "$PLUGIN_REPO_URL/assets" \
+                  --username "$SVN_USERNAME" --password "$SVN_PASSWORD"
+
+            - name: Delete everything
+              run: find assets -type f -not -path 'assets/.svn/*' -delete
+
+            - name: Checkout assets from current release
+              uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+              with:
+                  sparse-checkout: |
+                      assets
+                  show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
+                  path: git
+
+            - name: Copy files from git checkout to svn working copy
+              run: cp -R git/assets/* assets
+
+            - name: Commit the updated assets
+              working-directory: ./assets
+              run: |
+                  svn st | awk '/^?/ {print $2}' | xargs -r svn add
+                  svn st | awk '/^!/ {print $2}' | xargs -r svn rm
+                  svn commit . \
+                    -m "Sync assets for commit $GITHUB_SHA" \
+                    --no-auth-cache --non-interactive  --username "$SVN_USERNAME" --password "$SVN_PASSWORD" \
+                    --config-option=servers:global:http-timeout=600