added localization

Removed broad host permissions (http:/// and https:///).

UI/UX Improvements: Enabled the context menu icon for the single menu item by declaring global icons in the manifest.

Added automatic icon state detection: the icon now turns colorful on supported video sites and stays grayscale on unsupported or system pages.
Improved support for 100+ popular video platforms.
Fixed compatibility with Firefox 140+ by implementing the mandatory data collection consent policy (set to "none" as no data is collected).
Added a context menu option for quick access to the downloader.
Minor UI and stability improvements.