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/nostr-feed/components/NostrFeed.vue

@@ -7,14 +7,14 @@ import { Button } from '@/components/ui/button'
 import { formatDistanceToNow } from 'date-fns'
 import { Megaphone, RefreshCw, AlertCircle } from 'lucide-vue-next'
 import { config, configUtils } from '@/lib/config'
-import { relayHubComposable } from '@/composables/useRelayHub'
+import { injectService, SERVICE_TOKENS } from '@/core/di-container'
 
 const props = defineProps<{
   relays?: string[]
   feedType?: 'all' | 'announcements' | 'events' | 'general'
 }>()
 
-const relayHub = relayHubComposable
+const relayHub = injectService(SERVICE_TOKENS.RELAY_HUB)
 
 // Reactive state
 const notes = ref<any[]>([])