refactor: migrate interfaces to dedicated directory

Reorganizes TypeScript interfaces into a modular structure:
- Create dedicated interfaces directory with specialized files
- Split interfaces by domain (claims, common, limits, records, user)
- Update imports in endorserServer.ts to use new interface locations
- Replace 'any' types with 'unknown' for better type safety
- Add proper type imports and exports

This improves code organization and maintainability by:
- Centralizing interface definitions
- Reducing file size of endorserServer.ts
- Making interface relationships more explicit
- Improving type safety with stricter types

src/views/OnboardMeetingListView.vue

@@ -10,7 +10,7 @@
 
     <!-- Loading State -->
     <div v-if="isLoading" class="flex justify-center items-center py-8">
-      <fa icon="spinner" class="fa-spin-pulse" />
+      <font-awesome icon="spinner" class="fa-spin-pulse" />
     </div>
 
     <div v-else-if="attendingMeeting">
@@ -26,7 +26,7 @@
             class="text-red-600 hover:text-red-700 p-2"
             title="Leave Meeting"
           >
-            <fa icon="right-from-bracket" />
+            <font-awesome icon="right-from-bracket" />
           </button>
         </div>
       </div>