Add release workflow to CI

.github/workflows/release.yml

@@ -0,0 +1,38 @@
+---
+name: "tagged-release"
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  publish-binary:
+    name: "Publish Binary to GitHub"
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+            # `toolchain: stable` results in the latest stable toolchain being installed.
+            # However as soon as we use cargo the real version specified in rust-toolchain.toml replaces the stable toolchain.
+            #
+            # When something like https://github.com/actions-rs/toolchain/pull/184 lands we can delete this line and get a nice speedup
+            profile: minimal
+            toolchain: stable
+      - name: Build & test
+        run: |
+          cargo test --release
+          cargo build --release
+
+          mkdir rukaidata
+          cp target/release/rukaidata_bot rukaidata
+          cp target/release/rukaidata_website rukaidata
+          tar -cvzf rukaidata.tar.gz rukaidata
+      - name: Publish
+        uses: marvinpinto/action-automatic-releases@latest
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          prerelease: false
+          files: |
+            *.tar.gz