chore: scaffold Tauri 2 + Svelte 5 workspace

Standard Tauri layout with a Svelte 5 + TypeScript + Vite frontend and a
Rust backend in src-tauri. Adds build tooling, app/window config,
capabilities, generated icons and the project README.

.gitignore

@@ -0,0 +1,24 @@
+# Rust / Tauri
+/src-tauri/target
+/src-tauri/gen/schemas
+/target
+
+# Node
+node_modules
+dist
+dist-ssr
+.DS_Store
+
+# Vite
+*.local
+
+# Logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# Editor
+.vscode/*
+!.vscode/extensions.json
+.idea