Better ANSI Color Support Detection

[MAJigsaw77]

This PR improves how we check for ANSI color support by handling more terminals and CI environments and simplifying the detection logic in stripColor.

[Sword352]

Can confirm it works as excepted

[tobil4sk]

Is it not possible to perform a more generic check for ansi color support? It's possible that these CI environments will change, or that not all environments are covered.

[MAJigsaw77]

Is it not possible to perform a more generic check for ansi color support? It's possible that these CI environments will change, or that not all environments are covered.

This is best i could do, for CI they don't define TERM or anything else.

[MAJigsaw77]

The best solution is to use these as of now.

[tobil4sk]

What about adding a flag like HXCPP_COLOR, and then the scripts that install haxe in these ci environments can just make sure that is set?