feat: add github actions for build and release

Author: alynx

.github/workflows/release.yml

@@ -0,0 +1,69 @@
+name: release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: setup go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.21'
+
+      - name: deps
+        run: go mod download
+
+      - name: build all
+        run: |
+          GOOS=linux GOARCH=amd64 go build -ldflags "-s -w" -o ssh-inject-linux-amd64 .
+          GOOS=linux GOARCH=arm64 go build -ldflags "-s -w" -o ssh-inject-linux-arm64 .
+          GOOS=darwin GOARCH=amd64 go build -ldflags "-s -w" -o ssh-inject-darwin-amd64 .
+          GOOS=darwin GOARCH=arm64 go build -ldflags "-s -w" -o ssh-inject-darwin-arm64 .
+          GOOS=windows GOARCH=amd64 go build -ldflags "-s -w" -o ssh-inject-windows-amd64.exe .
+          GOOS=windows GOARCH=arm64 go build -ldflags "-s -w" -o ssh-inject-windows-arm64.exe .
+
+      - name: create release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: SSH-Inject ${{ github.ref_name }}
+          body: |
+            ## whats new
+
+            - bug fixes and improvements
+
+            ## download
+
+            grab the binary for your platform:
+
+            | os | arch | file |
+            |---|---|---|
+            | linux | x64 | `ssh-inject-linux-amd64` |
+            | linux | arm64 | `ssh-inject-linux-arm64` |
+            | macos | intel | `ssh-inject-darwin-amd64` |
+            | macos | apple silicon | `ssh-inject-darwin-arm64` |
+            | windows | x64 | `ssh-inject-windows-amd64.exe` |
+            | windows | arm64 | `ssh-inject-windows-arm64.exe` |
+
+            ## usage
+
+            ```bash
+            chmod +x ssh-inject-linux-amd64
+            ./ssh-inject-linux-amd64
+            ```
+
+            then follow the menu
+          files: |
+            ssh-inject-linux-amd64
+            ssh-inject-linux-arm64
+            ssh-inject-darwin-amd64
+            ssh-inject-darwin-arm64
+            ssh-inject-windows-amd64.exe
+            ssh-inject-windows-arm64.exe
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}