feature: Create BaseFontStore class with Tanstack query logic and FontshareStore, GoogleFontsStore based on it

src/entities/Font/model/store/fontshareStore.svelte.ts

@@ -0,0 +1,32 @@
+import type { FontshareParams } from '../../api';
+import { fetchFontshareFontsQuery } from '../services';
+import type { UnifiedFont } from '../types';
+import { BaseFontStore } from './baseFontStore.svelte';
+
+/**
+ * Fontshare store wrapping TanStack Query with runes
+ */
+export class FontshareStore extends BaseFontStore<FontshareParams> {
+    constructor(initialParams: FontshareParams = {}) {
+        super(initialParams);
+    }
+
+    protected getQueryKey(params: FontshareParams) {
+        return ['fontshare', params] as const;
+    }
+
+    protected async fetchFn(params: FontshareParams): Promise<UnifiedFont[]> {
+        return fetchFontshareFontsQuery(params);
+    }
+
+    // Provider-specific methods (shortcuts)
+    setSearch(search: string) {
+        this.setParams({ q: search } as any);
+    }
+}
+
+export function createFontshareStore(params: FontshareParams = {}) {
+    return new FontshareStore(params);
+}
+
+export const fontshareStore = new FontshareStore();