feat: refactor model API structure to support specific model types with dedicated API clients for Checkpoints, LoRAs, and Embeddings

refactor: consolidate model API client creation into a factory function for better maintainability
feat: implement move operations for LoRAs and handle unsupported operations for Checkpoints and Embeddings

static/js/api/modelApiFactory.js

@@ -0,0 +1,35 @@
+import { LoraApiClient } from './loraApi.js';
+import { CheckpointApiClient } from './checkpointApi.js';
+import { EmbeddingApiClient } from './embeddingApi.js';
+import { MODEL_TYPES } from './apiConfig.js';
+import { state } from '../state/index.js';
+
+export function createModelApiClient(modelType) {
+    switch (modelType) {
+        case MODEL_TYPES.LORA:
+            return new LoraApiClient();
+        case MODEL_TYPES.CHECKPOINT:
+            return new CheckpointApiClient();
+        case MODEL_TYPES.EMBEDDING:
+            return new EmbeddingApiClient();
+        default:
+            throw new Error(`Unsupported model type: ${modelType}`);
+    }
+}
+
+let _singletonClient = null;
+
+export function getModelApiClient() {
+    const currentType = state.currentPageType;
+    
+    if (!_singletonClient || _singletonClient.modelType !== currentType) {
+        _singletonClient = createModelApiClient(currentType);
+    }
+    
+    return _singletonClient;
+}
+
+export function resetAndReload(updateFolders = false) {
+    const client = getModelApiClient();
+    return client.loadMoreWithVirtualScroll(true, updateFolders);
+}