feat: Install go-gitlint in GitHub Actions workflo

.github/workflows/main.yml

@@ -0,0 +1,24 @@
+name: Main Workflow
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Install make
+      run: sudo apt-get install make
+
+    - name: Install go-gitlint
+      run: make tools
+
+    - name: Run commit-msg hook
+      run: git commit -m "test: this commit is allowed file sizes up to 50MB"