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/ImportDerivedAccountView.vue

@@ -8,7 +8,7 @@
           @click="$router.go(-1)"
           class="text-lg text-center px-2 py-1 absolute -left-2 -top-1"
         >
-          <fa icon="chevron-left"></fa>
+          <font-awesome icon="chevron-left"></font-awesome>
         </button>
         Derive from Existing Identity
       </h1>
@@ -30,16 +30,16 @@
           :key="dids[0]"
           @click="switchAccount(dids[0])"
         >
-          <fa
+          <font-awesome
             v-if="dids[0] == selectedArrayFirstDid"
             icon="circle"
             class="fa-fw text-blue-500 text-xl mr-3"
-          ></fa>
-          <fa
+          ></font-awesome>
+          <font-awesome
             v-else
             icon="circle"
             class="fa-fw text-slate-400 text-xl mr-3"
-          ></fa>
+          ></font-awesome>
           <span class="overflow-hidden">
             <div class="text-sm text-slate-500 truncate">
               <code>{{ dids.join(",") }}</code>