Highlight hovered token if collectable

[ShanaryS]

This lets the user know which token will be collected if the press a keybind. The highlight only shows when focus is correctly applied to the Video/SubtitlePlayer, only one of VideoPlayer or SubtitlePlayer for the App can receive the keybinds and likewise one of Video or SidePanel for the extension. Essentially, if the highlight is not present, the keybinds won't work.

This is a pure css implementation using :hover and :focus-within. To get the focus working needed .asbplayer-token-container applied in strategic places along with tabIndex=-1 to allow them to be focusable. I needed to apply this to the body of the page when dealing with the subtitle overlay for arbitrary pages with the extension, this might have unintended effects.

Currently the color is a light blue, lighter than selecting text with a mouse but similar enough to be intuitive. This can be changed if desired.

The only issue I noticed is that clicking the title bar when using the App allows collecting tokens on the SubtitlePlayer but it won't be highlighted. This is a small issue though and we should prefer false negatives over false positives for highlighting for this feature. The other concern is that users may think they can collect custom tokens by manually highlighting with the mouse.

[killergerbah]

Would it make sense to put this feature behind a setting? While it's generally useful I can imagine some users finding it distracting.

[killergerbah]

BTW, I guess this is because of focus-within but I am seeing the VideoPlayer have a blue outline:

[ShanaryS]

I added the highlight as an option, defaults to true. To reiterate, the collection and highlighting of tokens is still dependent on coloring being enabled.

I couldn't replicate the highlight around VideoPlayer but I added something that might address it.

I also updated the names of some of the other dictionary settings to make them consistent. The reason I prefixed the settings with dictionary is that some of the settings could have meaning outside of a dictionary context, but now I just prefixed them all. This is a breaking change and will require an updated config. It shouldn't affect the translations though as those all already had the prefix.

[killergerbah]

Awesome thanks, the blue outline looks to be addressed as well