Update MegaMenu Application Customizer: Version bump to 1.1.0, localization support added, and unnecessary files removed

- Deleted obsolete localization file for English (en-us).
- Updated version number from 1.0.4 to 1.1.0 in manifests.js and manifests.json.
- Added localization support for German (de-de) in a new localization file.
- Removed unnecessary dependencies from manifests.
- Added .gitignore to exclude build artifacts and temporary files.

lib/services/TaxonomyNavigationService.d.ts

@@ -3,9 +3,10 @@ import { IMenuItem } from './IMenuItem';
 import { ApplicationCustomizerContext } from '@microsoft/sp-application-base';
 export declare class TaxonomyNavigationService implements ITaxonomyNavigationService {
     private context;
-    private termSetName;
+    private termSetNameOrId;
+    private debug;
+    private cacheMinutes;
     private _taxonomyPickerService;
-    private _noTerm;
-    constructor(context: ApplicationCustomizerContext, termSetName: string);
+    constructor(context: ApplicationCustomizerContext, termSetNameOrId: string, debug?: boolean, cacheMinutes?: number);
     getMenuItems(): Promise<IMenuItem[]>;
 }