add: swiftformat to lint checks on ci

Author: mflknr

.github/workflows/lint.yml

@@ -14,4 +14,5 @@ jobs:
     steps:
      - uses: actions/checkout@v4
      - uses: jdx/mise-action@v2
-     - run: swiftlint --strict
+     - run: swiftlint --strict
+     - run: swiftformat . --lint --strict