refactor: standardize app property names and improve TypeScript definitions

- Updated property names in AppCard.vue, AppDetailModal.vue, AppGrid.vue, and other components to use camelCase for consistency.
- Enhanced TypeScript definitions for props and emits in various components to improve type safety.
- Refactored download status handling in processInstall.ts to align with updated App interface.
- Improved error handling and type definitions in DownloadDetail.vue and related components.
- Added optional properties and refined existing interfaces in typedefinition.ts for better clarity and usability.

src/components/TopActions.vue

@@ -15,10 +15,11 @@
   </div>
 </template>
 
-<script setup>
-import { defineEmits } from 'vue';
-
-const emit = defineEmits(['update', 'list']);
+<script setup lang="ts">
+const emit = defineEmits<{
+  (e: 'update'): void;
+  (e: 'list'): void;
+}>();
 
 const handleUpdate = () => {
   emit('update');