Add Github manual workflow for publishing crate

.github/workflows/publish-crate.yaml

@@ -0,0 +1,21 @@
+name: Publish crate
+
+on: workflow_dispatch
+
+jobs:
+  publish-crate:
+    runs-on: ubuntu-latest
+    needs: ["build-binary", "publish-docker"]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Select Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+      - name: Publish to crates.io
+        uses: actions-rs/cargo@v1
+        with:
+          command: publish
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}