Add xml to actions

.gitea/workflows/repod.yml

@@ -16,6 +16,16 @@ jobs:
       - run: composer run cs:check
       - run: composer run psalm:check
 
+  xml:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: wget https://raw.githubusercontent.com/nextcloud/appstore/master/nextcloudappstore/api/v1/release/info.xsd
+      - uses: ChristophWurst/xmllint-action@v1
+        with:
+          xml-file: ./appinfo/info.xml
+          xml-schema-file: ./info.xsd
+
   nodejs:
     runs-on: ubuntu-latest
     steps: