Player: Add shortcut to toggle subtitles

[GaryGosh]

No description provided.

[CLAassistant]

All committers have signed the CLA.

[tymmesyde]

Hi! Thank you for your PR, can you sign the CLA?
For this to work well it needs some kind of memory logic
For example let's say that you selected the third english subtitle, if you hide the subtitles and show them again, it will select the first subtitles in the list but it should use the same that was previously selected

[GaryGosh]

thank you very much for your feedback . sure I will add that

[GaryGosh]

@tymmesyde have updated my pr . pls review

[GaryGosh]

Can you check this pls @tymmesyde

[kKaskak]

Hey pls resolve the conflicts in your PR. Thank you

[GaryGosh]

@kKaskak I have resolved the conflicts , Thank you!

[kKaskak]

Hey, looking at it now it would be good to add it to the settings shortcuts section with the proper translation

[GaryGosh]

Sure I will include within this pr itself , thank you !

[kKaskak]

gm did you consider making the changes i requested to add it to settings as well?

[GaryGosh]

@kKaskak sorry for the delay. met with an accident. I have made the changes pls review

[GaryGosh]

can you review this pr @tymmesyde