Add the option to hide video controls

[epireyn]

Closes #1190

[KingLucius]

1. This one is not needed on TV as there is a lot of space under the progress bar, so I think we should hide this on TV, check feat(UI): Reorganize Settings #1137
2. Why not you use a list of buttons ID and map thru them, to avoid bugs in the future if we added another element with different type

[epireyn]

To answer the second point, it only removes Material Buttons and iterates on linear layouts. Any other element is ignored. It makes it easier to add other buttons without the need of maintaining a comprehensive list.

[fire-light42]

This leaves the button non centered and with weird padding. Do at least this.

it.textSize = 0f
it.iconPadding = 0
it.iconGravity = MaterialButton.ICON_GRAVITY_TEXT_START
it.setPadding(0,0,0,0)