Drawing feature just like in Gboard

[titanohearn]

Please see the appropriate readme section for issue reporting guidelines: https://github.com/Helium314/HeliBoard?tab=readme-ov-file#reporting-issues
tl;dr:

• search for duplicates, also in closed issues
• a single issue per topic
• ONLY add screenshots when necessary, and reduce their size

Is your feature request related to a problem? Please describe.
I'm a long time Gboard user, but after switching to Heliboard, I felt pretty comfortable, I like it a lot, but there's a feature I'd like to have as Heliboard user. It is "keyboard drawing" or something like that described in screenshot, with it it's really cool, comfortable to "type" text, that's really useful thing to have, I think it'd be "killing feature" in this application.

Describe the solution you'd like
Please provide a description of what you would like to have. The clearer it is described, the better it can be implemented the way you want it.

Use case
Provide a clear and concise description of your use case and what you thus think is missing, and why.

Describe alternatives you've considered (if any)

[Uranusek]

This option is already in advanced settings. Take a look at what library you need and download it from here https://github.com/erkserkserks/openboard/tree/46fdf2b550035ca69299ce312fa158e7ade36967/app/src/main/jniLibs