feat: initialize frontend with React and Vite setup

- Added React and Vite configuration files.
- Created main entry point for the application.
- Included global CSS styles for theming and layout.
- Added SVG assets for React and Vite logos.

octofit-tracker/backend/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "octofit-tracker-backend",
+  "version": "1.0.0",
+  "private": true,
+  "main": "dist/index.js",
+  "scripts": {
+    "dev": "ts-node-dev --respawn --transpile-only src/index.ts",
+    "build": "tsc -p tsconfig.json",
+    "start": "node dist/index.js"
+  },
+  "dependencies": {
+    "express": "^5.2.1",
+    "mongoose": "^9.7.1"
+  },
+  "devDependencies": {
+    "@types/express": "^5.0.6",
+    "@types/node": "^26.0.0",
+    "ts-node-dev": "^2.0.0",
+    "typescript": "^6.0.3"
+  }
+}