refactor(font): consolidate all types into single types.ts file

- Created unified model/types.ts with all type definitions
- Consolidated domain types (FontCategory, FontProvider, FontSubset)
- Consolidated Google Fonts API types (FontItem, GoogleFontsApiModel, etc.)
- Consolidated Fontshare API types (FontshareFont, FontshareStyle, etc.)
- Consolidated normalization types (UnifiedFont, FontStyleUrls, etc.)
- Consolidated store types (FontCollectionStore, FontCollectionFilters, etc.)
- Removed duplicate type files (font.ts, google_fonts.ts, fontshare_fonts.ts)
- Updated all imports to use consolidated types
- Updated normalize module to import from /Font
- Updated API clients to re-export types for backward compatibility
- Updated store to use centralized types
- Updated Font index.ts to export all types

Benefits:
- Centralized type definitions in single location
- Cleaner imports (single import from /Font)
- Better code organization with clear sections
- Follows FSD principles (types in model layer)
- No duplicate type definitions

src/entities/Font/api/google/googleFonts.ts

@@ -7,6 +7,10 @@
  * @see https://developers.google.com/fonts/docs/developer_api
  */
 
+import type {
+    FontItem,
+    GoogleFontsApiModel,
+} from '$entities/Font';
 import { api } from '$shared/api/api';
 import { buildQueryString } from '$shared/utils';
 import type { QueryParams } from '$shared/utils';
@@ -43,25 +47,15 @@ export interface GoogleFontsParams extends QueryParams {
 
 /**
  * Google Fonts API response wrapper
+ * Re-exported from model/types for backward compatibility
  */
-export interface GoogleFontsResponse {
-    kind: string;
-    items: GoogleFontItem[];
-}
+export type GoogleFontsResponse = GoogleFontsApiModel;
 
 /**
  * Simplified font item from Google Fonts API
+ * Re-exported from model/types for backward compatibility
  */
-export interface GoogleFontItem {
-    family: string;
-    category: string;
-    variants: string[];
-    subsets: string[];
-    version: string;
-    lastModified: string;
-    files: Record<string, string>;
-    menu: string;
-}
+export type GoogleFontItem = FontItem;
 
 /**
  * Google Fonts API base URL