Add a Regex Testing Tool

[TrueCrimeAudit]

Is your feature request related to a problem? Please describe.
I'll preface this by saying I am not a developer or even a CS student. This might even be the first GitHub issue I've ever posted. The code I have is not complete or working but may help you get 1% closer to where you need to be if you're interested in the project,

There are no good AHK extensions that have a built-in regex testing tool. I think this is important since the regex testing tools all use a bit of a different flavor of regex. I also think the extensions recognize regex's differently since they're inside of functions in a different way in AHK v2 than in a lot of other languages from what I can tell.

One of the simple tools I've tried to recreate in AHK is this: https://github.com/[chrmarti/vscode-regex](https://github.com/chrmarti/vscode-regex). Unfortunately, I haven't gotten it working. My initial approach was just to add a AHK v2 regex line just like the other regex lines. That didn't recognize the regex used by AHK v2. I recreated the regex using regex testing tools like Regxr but could not get it working with the extension. I had a difficult time getting a Typescript regex to recognize the regex string in AHK v2. I even tried to use a few different extensions to see if their syntax recognition tokenized a AHK v2 regex. I looked at THQBY's syntax, which I think has been developed in part from your syntax, but the only thing was the recognition of the built-in regex functions and "=~" which do not actually find the regex.

Here's an example of what I did:
https://github.com/TrueCrimeAudit/ahk-regex

Would love to help if you are interested but as you can see, I have a few skill issues limiting me.

[mark-wiemer]

Nice, seems like a great feature :) should be do-able since it's been done for other languages for sure. Gonna keep focusing on bugs for the next few months probably, but this is officially on the backlog!