Add typescript template for p5 v2.x global mode (ignores CDN/local and p5.js version choices)

[nbogie]

I've made some simplifications to get this merged before the codebase moves on again:

• Ignores p5.js version response (the package will have a dependency on the latest version of p5.js)
• Ignores CDN/local prompt response - p5 lib will always be downloaded for development by NPM, will include types.
• Both global and instance mode use the same template (which i've placed in basic-global-ts. For now, user will have to update their html file to point at the instance-mode sketch if that's what they want.

Whilst these are imperfect, it's a start, it works, and is far better than the previous ts template.

[nbogie]

updated now to use the same template directory contents for both global and instance mode.

[nbogie]

resolves issue #28

[SableRaf]

I've tried the branch and it works when specifying --language typescript (though it does not seem to ignore the CDN/local or global/instance prompts).

However, the custom path fails:

This may not be entirely relevant though since I made some changes since then, and I see there are now conflicts with the main branch again. Sorry it took so long for me to find a moment to look at it.

What would be the easiest path to getting your work merged now?