ci: add metainfo auto updating

.github/workflows/meta.yml

@@ -0,0 +1,36 @@
+name: Update metainfo on release
+
+on:
+    release:
+        types:
+            - published
+    workflow_dispatch:
+
+jobs:
+    update:
+        runs-on: ubuntu-latest
+        permissions:
+            contents: write
+
+        steps:
+        - uses: actions/checkout@v3
+        - uses: pnpm/action-setup@v2 # Install pnpm using packageManager key in package.json
+
+        - name: Use Node.js 18
+          uses: actions/setup-node@v3
+          with:
+              node-version: 18
+
+        - name: Install dependencies
+          run: pnpm i
+
+        - name: Update metainfo
+          run: pnpm updateMeta
+
+        - name: Commit and push changes
+          run: |
+              git config user.name "github-actions[bot]"
+              git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+              git add meta/dev.vencord.Vesktop.metainfo.xml
+              git commit -m "Insert release changes for ${{ github.event.release.tag_name }} [skip ci]"
+              git push