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/DiscoverView.vue

@@ -28,7 +28,7 @@
         class="px-4 rounded-r bg-slate-200 border border-l-0 border-slate-400"
         @click="searchSelected()"
       >
-        <fa icon="magnifying-glass" class="fa-fw"></fa>
+        <font-awesome icon="magnifying-glass" class="fa-fw"></font-awesome>
       </button>
     </div>
 
@@ -152,7 +152,7 @@
           class="ml-2 mt-2 px-4 py-2 rounded-md bg-blue-200 text-blue-500"
           @click="$router.push({ name: 'search-area' })"
         >
-          <fa icon="location-dot" class="fa-fw" />
+          <font-awesome icon="location-dot" class="fa-fw" />
           Select a {{ searchBox ? "Different" : "" }} Location for Nearby Search
         </button>
       </div>
@@ -182,7 +182,7 @@
       class="fixed left-6 bottom-24 text-center text-4xl leading-none bg-slate-400 text-white w-14 py-2.5 rounded-full"
       v-if="isLoading"
     >
-      <fa icon="spinner" class="fa-spin-pulse"></fa>
+      <font-awesome icon="spinner" class="fa-spin-pulse"></font-awesome>
     </div>
     <div
       v-else-if="projects.length === 0 && userProfiles.length === 0"
@@ -225,7 +225,7 @@
               <div class="grow">
                 <h2 class="text-base font-semibold">{{ project.name }}</h2>
                 <div class="text-sm">
-                  <fa icon="user" class="fa-fw text-slate-400"></fa>
+                  <font-awesome icon="user" class="fa-fw text-slate-400"></font-awesome>
                   {{
                     didInfo(
                       project.issuerDid,
@@ -253,7 +253,7 @@
             >
               <div class="grow">
                 <div class="text-sm">
-                  <fa icon="user" class="fa-fw text-slate-400"></fa>
+                  <font-awesome icon="user" class="fa-fw text-slate-400"></font-awesome>
                   {{
                     didInfo(
                       profile.issuerDid,
@@ -273,7 +273,7 @@
                   v-if="isAnywhereActive && profile.locLat && profile.locLon"
                   class="mt-1 text-xs text-slate-500"
                 >
-                  <fa icon="location-dot" class="fa-fw"></fa>
+                  <font-awesome icon="location-dot" class="fa-fw"></font-awesome>
                   {{
                     (profile.locLat > 0 ? "North" : "South") +
                     " in " +