ci(pre-commit): Migrate from qmlformat to qml_formatter

Although `qml_formatter` is much less mature, we can at least pin a
specific version via pre-commit. This is especially important since
`qmlformat` seems to change its formatting rules on every version bump,
so version incompatibilities between local computer and CI happen very
often.

.github/workflows/pre-commit.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     # The Dockerfile for this container can be found at:
     # https://github.com/Holzhaus/mixxx-ci-docker
-    container: holzhaus/mixxx-ci:20220805
+    container: holzhaus/mixxx-ci:20220930
     steps:
       - name: "Check out repository"
         uses: actions/checkout@v3

.pre-commit-config.yaml

@@ -116,6 +116,10 @@ repos:
     hooks:
       - id: prettier
         types: [yaml]
+  - repo: https://github.com/qarmin/qml_formatter.git
+    rev: 0.2.0
+    hooks:
+      - id: qml_formatter
   - repo: local
     hooks:
       - id: qsscheck
@@ -139,13 +143,6 @@ repos:
         language: python
         types: [text]
         files: ^CHANGELOG.md$
-      - id: qmlformat
-        name: qmlformat
-        entry: python tools/qmlformat.py
-        pass_filenames: true
-        language: python
-        types: [text]
-        files: ^.*\.qml$
       - id: qmllint
         name: qmllint
         entry: qmllint