feat(config): add telemetry and metrics configuration options

- Introduce new environment variables for telemetry and Prometheus metrics in .env.example
- Create example configuration files for Prometheus and Grafana dashboards
- Update main application to utilize new configuration settings for Sentry, audio converter, and proxy
- Enhance channel services to support audio conversion API integration
- Implement middleware for metrics IP whitelisting and basic authentication in routes

src/main.ts

@@ -6,7 +6,15 @@ import { ProviderFiles } from '@api/provider/sessions';
 import { PrismaRepository } from '@api/repository/repository.service';
 import { HttpStatus, router } from '@api/routes/index.router';
 import { eventManager, waMonitor } from '@api/server.module';
-import { Auth, configService, Cors, HttpServer, ProviderSession, Webhook } from '@config/env.config';
+import {
+  Auth,
+  configService,
+  Cors,
+  HttpServer,
+  ProviderSession,
+  Sentry as SentryConfig,
+  Webhook,
+} from '@config/env.config';
 import { onUnexpectedError } from '@config/error.config';
 import { Logger } from '@config/logger.config';
 import { ROOT_DIR } from '@config/path.config';
@@ -140,7 +148,8 @@ async function bootstrap() {
 
   eventManager.init(server);
 
-  if (process.env.SENTRY_DSN) {
+  const sentryConfig = configService.get<SentryConfig>('SENTRY');
+  if (sentryConfig.DSN) {
     logger.info('Sentry - ON');
 
     // Add this after all routes,