Remove everything and add stub Go module

.github/workflows/go.yml

@@ -0,0 +1,35 @@
+name: Go
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        go-version: ["1.21", "1.22"]
+    name: Lint ${{ matrix.go-version == '1.22' && '(latest)' || '(old)' }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go-version }}
+          cache: true
+
+      - name: Install libolm
+        run: sudo apt-get install libolm-dev libolm3
+
+      - name: Install goimports
+        run: |
+          go install golang.org/x/tools/cmd/goimports@latest
+          export PATH="$HOME/go/bin:$PATH"
+
+      - name: Install pre-commit
+        run: pip install pre-commit
+
+      - name: Lint
+        run: pre-commit run -a

.github/workflows/python-lint.yml

@@ -1,26 +0,0 @@
-name: Python lint
-
-on: [push, pull_request]
-
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-python@v5
-      with:
-        python-version: "3.12"
-    - uses: isort/isort-action@master
-      with:
-        sortPaths: "./mautrix_telegram"
-    - uses: psf/black@stable
-      with:
-        src: "./mautrix_telegram"
-        version: "24.1.1"
-    - name: pre-commit
-      run: |
-        pip install pre-commit
-        pre-commit run -av trailing-whitespace
-        pre-commit run -av end-of-file-fixer
-        pre-commit run -av check-yaml
-        pre-commit run -av check-added-large-files