Enhance TTS functionality and security settings

- Integrated Google TTS languages from a separate module for better maintainability.
- Updated local device voice fetching to support both macOS and Windows, improving cross-platform compatibility.
- Enhanced dashboard route protection by adding dynamic settings for login requirements and tunnel access.
- Introduced UI elements for managing security settings related to API key requirements and dashboard access via tunnel.
- Added default TTS response example in the media provider page for better user guidance.
- Updated constants to reflect changes in TTS provider configurations.

This commit improves the overall user experience and security of the TTS features.

src/lib/localDb.js

@@ -62,6 +62,7 @@ const defaultData = {
     comboStrategy: "fallback",
     comboStrategies: {},
     requireLogin: true,
+    tunnelDashboardAccess: true,
     observabilityEnabled: true,
     observabilityMaxRecords: 1000,
     observabilityBatchSize: 20,
@@ -99,6 +100,7 @@ function cloneDefaultData() {
       comboStrategy: "fallback",
       comboStrategies: {},
       requireLogin: true,
+      tunnelDashboardAccess: true,
       observabilityEnabled: true,
       observabilityMaxRecords: 1000,
       observabilityBatchSize: 20,