ci: Replace the pre-commit.ci app with github workflows

Since we're using the uv hook, pre-commit requires the internet to work
properly which the pre-commit.ci app ran jobs don't have access to.
These two workflows are meant to replace the app entirely by doing both
checking on PRs/main and auto updates. It means that we do lose the
autofix feature, but it's that or throwing away the uv-lock hook.

Original work done in taskcluster/taskgraph#677
and taskcluster/taskgraph#678

Author: Eijebong

.github/workflows/pre-commit-autoupdate.yml

@@ -0,0 +1,39 @@
+name: Autoupdate
+on:
+  schedule:
+    - cron: '0 0 1 * *'
+jobs:
+  pre-commit:
+    name: Pre-commit
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup git
+        run: |
+          git config --global user.name "Pre-commit automation"
+          git config --global user.email "[email protected]"
+      - uses: actions/setup-python@v5
+      - run: python -m pip install pre-commit
+        shell: bash
+      - name: Get commit message
+        run: |
+          echo "COMMIT_MSG=$(cat .pre-commit-config.yaml | yq -r '.ci.autoupdate_commit_msg // "Update pre-commit config"')" >> $GITHUB_ENV
+      - name: Update files
+        run: |
+          git checkout -B pre-commit-update
+          pre-commit autoupdate -j4
+          git add .pre-commit-config.yaml
+          git commit -m "${COMMIT_MSG}"
+          git push -f origin pre-commit-update
+      - name: Create PR if necessary
+        run: |
+          curl -sL \
+          -X POST \
+          -H "Accept: application/vnd.github+json" \
+          -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+          -H "X-GitHub-Api-Version: 2022-11-28" \
+          https://api.github.com/repos${{ github.reository_owner }}/${{ github.repository }}/pulls \
+          -d "{\"title\":\"${COMMIT_MSG}\",\"body\":\"\",\"head\":\"pre-commit-update\",\"base\":\"${{ github.event.repository.default_branch }}\"}"

.github/workflows/pre-commit.yml

@@ -0,0 +1,21 @@
+---
+name: "Pre-commit"
+on:
+  pull_request:
+  push:
+    branches: [main]
+jobs:
+  pre-commit:
+    name: Run pre-commit
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+      - run: python -m pip install pre-commit
+        shell: bash
+      - uses: actions/cache@v4
+        with:
+          path: ~/.cache/pre-commit
+          key: pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
+      - run: pre-commit run --show-diff-on-failure --color=always -a
+        shell: bash

.pre-commit-config.yaml

@@ -2,9 +2,7 @@
 # See https://pre-commit.com/hooks.html for more hooks
 ---
 ci:
-  autofix_commit_msg: "style: pre-commit.ci auto fixes [...]"
   autoupdate_commit_msg: "chore: pre-commit autoupdate"
-  autoupdate_schedule: monthly
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v5.0.0