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/useNodeLibrarySidebarTab.ts

@@ -1,16 +1,12 @@
-import { defineAsyncComponent, markRaw } from 'vue'
+import { markRaw } from 'vue'
 
 import NodeLibrarySidebarTab from '@/components/sidebar/tabs/NodeLibrarySidebarTab.vue'
 import type { SidebarTabExtension } from '@/types/extensionTypes'
 
-const NodeIcon = markRaw(
-  defineAsyncComponent(() => import('virtual:icons/comfy/node'))
-)
-
 export const useNodeLibrarySidebarTab = (): SidebarTabExtension => {
   return {
     id: 'node-library',
-    icon: NodeIcon,
+    icon: 'icon-[comfy--node]',
     title: 'sideToolbar.nodeLibrary',
     tooltip: 'sideToolbar.nodeLibrary',
     label: 'sideToolbar.labels.nodes',