feat: add "Rich caption rendering" setting

[RafaelsRamos]

Adds a new setting - Rich caption rendering (false by default) under Settings > Player > Appearance.

Showcase

sample.mp4

• Translations;

Notes

• This setting does not apply mid-video. e.g. If we are watching a video, and change the setting, the changes only reflect once we open a new video. The settings I tested had the same behaviour, but I would like to confirm that is expected, or if I'm missing something;
• I added a new translation under the id - rich_caption_rendering. I don't know if there is anything else I must do regarding this addition.

closes #5306

[RafaelsRamos]

The reason we opted for the setting is the issue reported on #5306.

[Bnyro]

Please also add a "android:summary" to the preference which explains a bit what the preference actually does, like "Render web captions style (position, color, italics, ...)".

[RafaelsRamos]

Went with "Render web captions for a more rich and customized experience.". Do you guys agree?

On another note, I would like to review these settings' texts since I see that some descriptions have '.' in the end, others don't, etc. Just a walkaround for consistency. If you think is best I could do that review in this PR, but I would prefer to do that in a different one.

[Bnyro]

Went with "Render web captions for a more rich and customized experience.". Do you guys agree?

Sounds good 👍

On another note, I would like to review these settings' texts since I see that some descriptions have '.' in the end, others don't, etc. Just a walkaround for consistency. If you think is best I could do that review in this PR, but I would prefer to do that in a different one.

That'd be better if we do that in a different PR, yes 👍

[maboroshin]

Render web captions for a more rich and customized experience.

The above would not be a sufficient description of the setting. This text is meant to solve the problem if it is on. Is the following statement also needed?

```Turn off the subtitles when they are on the side.``