Enhanced custom icon support with tailwind (#5159)

* Add support for custom iconify using tailwind plugin
- Register svgs from custom icons folder
- Update existing custom icons to remove padding
- Swap component icons for classes in sidebar tabs
- Update browse templates in menu to use custom icon

* Add basic check for custom SVG icons

* Remove unused iconify packages

src/composables/sidebarTabs/useModelLibrarySidebarTab.ts

@@ -1,18 +1,14 @@
-import { defineAsyncComponent, markRaw } from 'vue'
+import { markRaw } from 'vue'
 
 import ModelLibrarySidebarTab from '@/components/sidebar/tabs/ModelLibrarySidebarTab.vue'
 import { useElectronDownloadStore } from '@/stores/electronDownloadStore'
 import type { SidebarTabExtension } from '@/types/extensionTypes'
 import { isElectron } from '@/utils/envUtil'
 
-const AiModelIcon = markRaw(
-  defineAsyncComponent(() => import('virtual:icons/comfy/ai-model'))
-)
-
 export const useModelLibrarySidebarTab = (): SidebarTabExtension => {
   return {
     id: 'model-library',
-    icon: AiModelIcon,
+    icon: 'icon-[comfy--ai-model]',
     title: 'sideToolbar.modelLibrary',
     tooltip: 'sideToolbar.modelLibrary',
     label: 'sideToolbar.labels.models',