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/ISPTermStorePickerServiceProps.d.ts

@@ -4,4 +4,5 @@ export interface ISPTermStorePickerServiceProps {
     hideDeprecatedTags: boolean;
     hideTagsNotAvailableForTagging: boolean;
     anchorId: string;
+    cacheMinutes: number;
 }