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/components/ImageMethodDialog.vue

@@ -12,14 +12,14 @@
           class="text-lg text-center px-2 py-0.5 leading-none absolute right-0 top-0 text-white"
           @click="close()"
         >
-          <fa icon="xmark" class="w-[1em]"></fa>
+          <font-awesome icon="xmark" class="w-[1em]"></font-awesome>
         </div>
       </div>
 
       <div>
         <div class="text-center mt-8">
           <div>
-            <fa
+            <font-awesome
               icon="camera"
               class="bg-gradient-to-b from-blue-400 to-blue-700 shadow-[inset_0_-1px_0_0_rgba(0,0,0,0.5)] text-white px-2 py-2 rounded-md"
               @click="openPhotoDialog()"
@@ -34,14 +34,14 @@
               <input type="text" v-model="imageUrl" class="border-2" />
             </span>
             <span class="ml-2">
-              <fa
+              <font-awesome
                 v-if="imageUrl"
                 icon="check"
                 class="bg-gradient-to-b from-blue-400 to-blue-700 shadow-[inset_0_-1px_0_0_rgba(0,0,0,0.5)] text-white px-2 py-2 rounded-md cursor-pointer"
                 @click="acceptUrl"
               />
               <!-- so that there's no shifting when it becomes visible -->
-              <fa v-else icon="check" class="text-white bg-white px-2 py-2" />
+              <font-awesome v-else icon="check" class="text-white bg-white px-2 py-2" />
             </span>
           </div>
         </div>