feat: implement user authentication and license management system

- Added schema for users, licenses, and license hostnames in the database.
- Created storage utility for reading and writing JSON files.
- Developed user service for user registration, authentication, and retrieval.
- Implemented authentication middleware to protect routes.
- Built LicenseCard component to display license details.
- Created SiteNav component for navigation with user authentication status.
- Established AuthContext for managing authentication state and actions.
- Developed Home page to display available plugins.
- Created LicenseManager page for managing licenses with forms for creation and verification.
- Implemented PluginDetail page to show detailed information about a specific plugin.
- Added utility functions for date formatting.

package.json

@@ -11,7 +11,10 @@
         "start": "node server/index.js"
     },
     "dependencies": {
+        "bcryptjs": "^3.0.3",
         "express": "^4.19.2",
+        "jsonwebtoken": "^9.0.3",
+        "mysql2": "^3.16.2",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
         "react-router-dom": "^6.23.1"
@@ -20,4 +23,4 @@
         "@vitejs/plugin-react": "^4.2.0",
         "vite": "^5.0.0"
     }
-}
+}