feat(frontend): connect client to local SurrealDB

Add a SurrealDB service with a local IndexedDB-backed (indxdb://) connection for private, local-first data and an optional remote connection for sync. Initialize the local connection on app start and document the required VITE_* variables in .env.example.

Bump the client version to 0.0.1.

client/package.json

@@ -1,7 +1,7 @@
 {
   "name": "hubmi-client",
   "private": true,
-  "version": "0.0.0",
+  "version": "0.0.1",
   "type": "module",
   "scripts": {
     "dev": "vite",
@@ -11,7 +11,9 @@
   },
   "dependencies": {
     "@mdi/font": "^7.4.47",
+    "@surrealdb/wasm": "^2.6.1",
     "@vueuse/core": "^15.0.0",
+    "surrealdb": "^2.0.10",
     "vue": "^3.5.42",
     "vuetify": "^4.2.3"
   },