feat: add centralized error logging system

- Implemented Error Log API to capture and store error logs from various services.
- Updated admin_ui to include Error Log Viewer component for inspecting logs.
- Enhanced error handling in auth_api, employee_api, and transit_api to report errors to the Error Log API.
- Modified existing services to utilize the new error logging functionality.
- Updated Docker Compose configuration to include the Error Log API service.
- Added error logging service in bus_terminal for Flutter application.

admin_ui/src/App.jsx

@@ -5,6 +5,7 @@ import LinkStop from './components/LinkStop'
 import BusLinesManager from './components/BusLinesManager'
 import FleetManager from './components/FleetManager'
 import ScheduleMaker from './components/ScheduleMaker'
+import ErrorLogViewer from './components/ErrorLogViewer'
 
 export default function App() {
   const [token, setToken] = useState(localStorage.getItem('token'))
@@ -46,6 +47,7 @@ export default function App() {
         <FleetManager token={token} user={user} />
         <LinkStop token={token} user={user} />
         <ScheduleMaker token={token} user={user} />
+        <ErrorLogViewer token={token} />
       </main>
     </div>
   )