Attempt to add publish workflow

.gitea/workflows/publish.yaml

@@ -0,0 +1,19 @@
+name: Publish library
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+  workflow_dispatch:
+
+jobs:
+  publish:
+    runs-on: nix
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Publish to Gitea
+        run: nix develop -c cargo publish --dry-run --token ${{ secrets.GITEA_TOKEN }} --index sparse+https://git.colon-three.com/api/packages/kodi/cargo/ 
+      - name: Publish to crates.io
+        run: nix develop -c cargo publish --dry-run --token ${{ secrets.CRATESIO_TOKEN }}