[Refactor] Rework modelStore and ModelLibrarySidebarTab (#1350)

* nit

* Rename

* nit

* Move load model folders to app level

* Various fixes

* nit

* nit

* wip

* nit

* nit

* nit

* Split

* nit

* Add back spinner

* nit

* nit

* Add refresh button

* nit

* nit

* Preserve model folder order

* Avoid order change on folder open

src/scripts/app.ts

@@ -2293,8 +2293,8 @@ export class ComfyApp {
       graphData.models &&
       useSettingStore().get('Comfy.Workflow.ShowMissingModelsWarning')
     ) {
-      for (let m of graphData.models) {
-        const models_available = await useModelStore().getModelsInFolderCached(
+      for (const m of graphData.models) {
+        const models_available = await useModelStore().getLoadedModelFolder(
           m.directory
         )
         if (models_available === null) {
@@ -2929,7 +2929,6 @@ export class ComfyApp {
     }
     if (this.vueAppReady) {
       useToastStore().add(requestToastMessage)
-      useModelStore().clearCache()
     }
 
     const defs = await api.getNodeDefs({