Merge branch '330406-add-lock-mutation-fe' into 'master'

Blob refactor: Add lock mutation to frontend

See merge request gitlab-org/gitlab!67329

app/assets/javascripts/repository/mutations/lock_path.mutation.graphql

+mutation toggleLock($projectPath: ID!, $filePath: String!, $lock: Boolean!) {
+  projectSetLocked(input: { projectPath: $projectPath, filePath: $filePath, lock: $lock }) {
+    project {
+      pathLocks {
+        nodes {
+          path
+        }
+      }
+    }
+    errors
+  }
+}