add Pinia axios and VITE config to frontend.

frontend/src/vite-env.d.ts

@@ -1 +1,12 @@
 /// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+    readonly VITE_API_BASE_URL: string;
+    readonly VITE_CLEARNET_DOMAIN: string;
+    readonly VITE_ONION_HOSTNAME: string;
+    readonly VITE_MAX_IMAGES_PER_UPLOAD: string;
+}
+
+interface ImportMeta {
+    readonly env: ImportMetaEnv;
+}