feat(experimental): add interactive messages support (buttons, lists, templates, carousel)

⚠️ EXPERIMENTAL FEATURE - Use only for testing with disposable accounts

Implements full support for WhatsApp interactive messages including:
- Simple text buttons (up to 3 buttons)
- Buttons with images/videos
- List messages (up to 10 items in sections)
- Template buttons (quick reply, URL, call actions)
- Carousel messages (up to 10 scrollable cards)

Features:
- Feature flag 'enableInteractiveMessages' (default: true for dev/testing)
- Prometheus metrics for tracking sends, successes, failures, and latency
- Comprehensive TypeScript types for all interactive message formats
- Extensive logging with warnings about potential account bans
- Automatic 'biz' node injection when feature is enabled

CRITICAL WARNINGS:
- These features may NOT work on non-business WhatsApp accounts
- Can cause temporary or permanent account BANS
- WhatsApp actively blocks this functionality since April 2022
- Messages may be rejected or fail silently
- Use ONLY in dev environment with test accounts

Architecture:
- Added ButtonInfo, Templatable, Listable, Carouselable types to Message.ts
- Extended AnyMediaMessageContent and AnyRegularMessageContent
- Implemented message generation in messages.ts
- Added getButtonType() and getButtonArgs() helpers in messages-send.ts
- Injected 'biz' node in stanza construction with metrics tracking
- Added 4 new Prometheus metrics: interactiveMessagesSent, Success, Failures, Latency

Documentation:
- Complete usage guide in INTERACTIVE_MESSAGES.md
- Examples for all interactive message types
- Metrics monitoring queries
- Troubleshooting guide
- Migration path to WhatsApp Business API

Related issues:
- https://github.com/WhiskeySockets/Baileys/issues/56
- https://github.com/WhiskeySockets/Baileys/issues/25
- https://github.com/WhiskeySockets/Baileys/pull/2291

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/Defaults/index.ts

@@ -82,6 +82,11 @@ export const DEFAULT_CONNECTION_CONFIG: SocketConfig = {
 	// Enable automatic recovery of Click-to-WhatsApp ads messages
 	// These arrive as "placeholder messages" and need to be requested from the phone
 	enableCTWARecovery: true,
+	// ⚠️ EXPERIMENTAL: Enable interactive messages (buttons, lists, templates, carousel)
+	// WARNING: These features may not work and can cause account BANS
+	// Use ONLY for testing with DISPOSABLE accounts in DEV environment
+	// Default: true (for dev/testing) - set to false in production
+	enableInteractiveMessages: true,
 	options: {},
 	appStateMacVerification: {
 		patch: false,