[FEATURE] Show all units within LoS of selected token

[Eliemer]

A new tool that, when you select a token, creates an area akin to a light source around your token to highlight all other tokens within your LoS. The idea is to be able to parse it at a glance and often. Maybe even provide hotkeys to auto-target all allied, enemy or all tokens within LoS

Here's the effect simulated with lighting and wall height

[Eliemer]

Here's the same image with LoS lines drawn in.. though it looks too crowded. I wonder what sort of option we have available to highlight tokens