add github release action

Signed-off-by: wuyingjun <[email protected]>

.github/workflows/release.yml

@@ -0,0 +1,50 @@
+# Workflow's name
+name: release kosmosctl for linux&darwin
+
+# Workflow's trigger
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+# Workflow's jobs
+jobs:
+  # job's id
+  release:
+    # job's name
+    name: release kosmosctl for linux&darwin
+
+    # the type of machine to run the job on
+    runs-on: ubuntu-20.04
+
+    # create a build matrix for jobs
+    strategy:
+      fail-fast: false
+      matrix:
+        target: kosmosctl
+        os: [linux, darwin]
+        arch: [amd64, arm64]
+
+    # create steps
+    steps:
+      # step1: check out repository
+      - name: Check out git repository
+        uses: actions/checkout@v3
+
+      # step2: install go env
+      - name: Install Go
+        uses: actions/setup-go@v3
+
+      # step3: make binaries
+      - name: Make binaries
+        run: make release
+
+      # step4: create release
+      - name: release
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          files: |
+            _output/release/kosmosctl-${{ matrix.os }}-${{ matrix.arch }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}