Added Oxibadge, a minimal Tauri + Svelte desktop client

Scaffolds the oxibadge crate/frontend as a new workspace member, stripped
down to a bare hello-world, and
extends the CI pipeline

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.gitea/workflows/check-format-and-test.yaml

@@ -6,12 +6,14 @@ on:
 jobs:
   build:
     container: docker.io/rust:1.98.1-alpine3.24
+    env:
+      RUSTFLAGS: -C target-feature=-crt-static
     steps:
       - name: Install the dependencies
         run: |
           rustup component add clippy rustfmt &&
           apk update &&
-          apk add musl-dev git npm
+          apk add musl-dev git npm pkgconf gtk+3.0-dev webkit2gtk-4.1-dev librsvg-dev patchelf
 
       - name: Checkout the code
         uses: actions/checkout@v3