Refactor chat and market modules for improved integration and maintainability

- Remove deprecated Nostr chat and relay hub components, transitioning to a modular chat service for better encapsulation.
- Update App.vue and Navbar.vue to utilize the new chat module, enhancing user experience with automatic peer management.
- Simplify event handling and connection logic in ChatComponent.vue, ensuring compatibility with the new chat service architecture.
- Adjust market settings and order history components to reflect changes in the chat module, improving overall coherence in the application structure.
- Clean up unused imports and streamline configuration access for better performance and maintainability.

src/modules/market/composables/useMarket.ts

@@ -463,14 +463,17 @@ export function useMarket() {
   // Connect to market
   const connectToMarket = async () => {
     try {
-      // Connect to market
-      
-      // Connect to relay hub
-      await relayHub.connect()
+      // Use existing relay hub connection (should already be connected by base module)
       isConnected.value = relayHub.isConnected.value
 
       if (!isConnected.value) {
-        throw new Error('Failed to connect to Nostr relays')
+        console.warn('RelayHub not connected, attempting to connect...')
+        await relayHub.connect()
+        isConnected.value = relayHub.isConnected.value
+        
+        if (!isConnected.value) {
+          throw new Error('Failed to connect to Nostr relays')
+        }
       }
 
       // Market connected successfully