[RTL] Add cell option to control if cell is shrunk to its contents width.

[bruvzg]

Fixes #101462

Can be used to disable cell shrinking to contents:

[table=3]
[cell expand=10][left][bgcolor=darkred]10%[/bgcolor][/left][/cell]
[cell expand=60][center][bgcolor=darkgreen]60%[/bgcolor][/center][/cell]
[cell expand=30][right][bgcolor=darkblue]30%[/bgcolor][/right][/cell]
[/table]

[table=3]
[cell expand=10 shrink=false bg=white][left][bgcolor=darkred]10%[/bgcolor][/left][/cell]
[cell expand=60 shrink=false bg=yellow][center][bgcolor=darkgreen]60%[/bgcolor][/center][/cell]
[cell expand=30 shrink=false bg=pink][right][bgcolor=darkblue]30%[/bgcolor][/right][/cell]
[/table]

[table=3]
[cell=10][bgcolor=darkred]10%[/bgcolor][/cell]
[cell=60][bgcolor=darkgreen]60%[/bgcolor][/cell]
[cell=30][bgcolor=darkblue]30%[/bgcolor][/cell]
[cell]............................................................................................................................[/cell]
[cell]............................................................................................................................[/cell]
[cell]............................................................................................................................[/cell]
[/table]

[akien-mga]

Needs rebase.

[akien-mga]

Thanks!

[Alexey-Ost]

I think {ratio} should also be in {options} and work together in one transparent way.
Having separate [cell={ratio}] and [cell {options}] is redundant and misleading.

Anyway, great job!