Activate Steam Key from Context Menu per Nirantali

Provides a simple and convenient way to activate Steam Keys by simply selecting/mark them and then activating them via Right-Click Context Menu.

The Extension uses the newly available Steam Key Web activation and is fully automated (SSA_Auto_Accept etc.).

Simply select/mark a Steam Key, Right-Click and click on 'Activate Steam Key' in the Context Menu.

Users already needs to be logged in on Steam Web Page to work properly.

Revisions:

v1.2.2
- Removed permission for tabs because doesn't need to be requested to work
- Changed the Auto SSA checkbox Method to be compatible with SteamDB Extension
- Added flexible fix for timing issues to Auto SSA checkbox Function
- Optimized everything to avoid any future timing issues
- Fixed Extension Icon transparency

v1.2.1
- Selection(Key) is now URLencoded for binary safety

v1.1
- Added pattern check for Steam Key to allow users to manual correct certain keys
- Automatically remove all white spaces from key selection

v1.0
- Initial Release