This provides support for a mechanism to easily configure and override Fenix UI preferences, similar to how we override Gecko preferences with `ironfox.cfg` - the prefs and values we're setting specifically can be seen at `IFPrefs.kt`
This significantly lowers the burden of maintenance (especially since we also override Nimbus directly as well), as we no longer need to make a patch just to modify a setting value...
(We're also setting the preference keys directly from the R.string values - so if a preference is removed or changed in the future, we'll know, as it'll cause the build to fail)
Signed-off-by: celenity <celenity@celenity.dev>
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