fix(api): make the http header and request timeouts tunable (#2259)

fluxer_api/src/api/config/APIConfig.ts

@@ -34,6 +34,8 @@ export type APIGeoipConfig = APIGeoipFilesystemConfig | APIGeoipS3Config;
 export interface APIConfig {
 	nodeEnv: 'development' | 'production';
 	port: number;
+	headersTimeoutMs: number;
+	requestTimeoutMs: number;
 	maxInflightRequests: number;
 	ipBanExemptIps: Array<string>;
 	desktopGitHubRedirectCountries: ReadonlySet<string>;