Add action to publish .exe on release

Author: woojiahao

.github/workflows/publish_windows.yml

@@ -0,0 +1,49 @@
+name: Build and release Git-Mastery CLI for Windows
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - "v*.*.*"
+
+jobs:
+  build-and-release:
+    permissions:
+      contents: write
+      pull-requests: write
+      packages: read
+      issues: read
+
+    runs-on: windows-latest
+
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Build binary
+        run: |
+          pyinstaller gitmastery.spec
+
+      - name: Generate SHA256
+        id: checksum
+        run: |
+          FILENAME=gitmastery
+          SHA256=$(shasum -a 256 dist/$FILENAME | cut -d ' ' -f1)
+          echo "sha256=$SHA256" >> $GITHUB_OUTPUT
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: dist/gitmastery.exe
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}