feat: Refactor and modularize flow handling for improved maintainability

- Extracted BuyModeHandler, DesktopFlow, MobileFlow, and SummaryReporter into separate modules for better organization and testability.
- Enhanced type safety and added interfaces for various return types in Load, Logger, UserAgent, and flow modules.
- Implemented comprehensive error handling and logging throughout the new modules.
- Added unit tests for DesktopFlow, MobileFlow, and SummaryReporter to ensure functionality and correctness.
- Updated existing utility functions to support new flow structures and improve code clarity.

src/dashboard/BotController.ts

@@ -1,6 +1,7 @@
-import { dashboardState } from './state'
 import type { MicrosoftRewardsBot } from '../index'
+import { log as botLog } from '../util/Logger'
 import { getErrorMessage } from '../util/Utils'
+import { dashboardState } from './state'
 
 export class BotController {
   private botInstance: MicrosoftRewardsBot | null = null
@@ -11,7 +12,7 @@ export class BotController {
   }
 
   private log(message: string, level: 'log' | 'warn' | 'error' = 'log'): void {
-    console.log(`[BotController] ${message}`)
+    botLog('main', 'BOT-CONTROLLER', message, level)
     
     dashboardState.addLog({
       timestamp: new Date().toISOString(),