Colouring the compiler directives

[Cirieno]

When compiling AHK to exe you can include a block of directives that can then be seen in the File Properties for the exe file. (As an aside, this information can be picked up by updaters such as Software Update Monitor so people can keep informed of updates). More info here https://www.autohotkey.com/docs/misc/Ahk2ExeDirectives.htm

It would be nice if these directives could be colourised instead of appearing as comments. I would suggest the same pink + orange as the environment directives.

[mark-wiemer]

Teeeechnically an enhancement? Doesn't really matter, not changing priority on this one.