Add GitHub actions again

.github/workflows/clippy.yml

@@ -0,0 +1,19 @@
+name: Code quality
+
+on:
+  push:
+    tags:
+      - 'v*'
+env:
+  CARGO_TERM_COLOR: always
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - run: cargo login ${CRATES_IO_TOKEN}
+        working-directory: ./daedalus
+        env:
+          CRATES_IO_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}
+      - run: cargo publish
+        working-directory: ./daedalus