feat: Add disableExtremeGames toggle in Config tab (#236)

[LindirQuenya]

This PR addresses #236, adding a "Disable Extreme Games" toggle in the Config tab. When this is turned on, it will set disableExtremeGames to true, and browsePageShowExtreme to false.
The new toggle is only visible when disableExtremeGames is false, so turning it on will hide it.

As for the title/description: I put in something temporary for English, feel free to change it. Other languages will need translations.

[coveralls]

Pull Request Test Coverage Report for Build 1766301806

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 60.303%

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Totals
Change from base Build 1640866377:	0.0%
Covered Lines:	360
Relevant Lines:	548

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💛 - Coveralls