add workflow

.github/workflows/build_and_upload.yml

@@ -0,0 +1,31 @@
+name: Build and Upload .so File
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  build:
+    runs-on: macos-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version-file: ./go.mod
+
+    - name: Build .so file
+      run: |
+        mkdir -p build
+        go build -buildmode=plugin -o build/custom_linters.so ./plugin/main.go
+
+    - name: Upload .so file
+      uses: actions/upload-artifact@v2
+      with:
+        name: plugin.so
+        path: build/plugin.so