Export make template functions

[lukekarrys]

The only source changes were to export the two existing functions. I tried to add tests and docs to match the existing style. The resulting d.ts file isn't very DRY, I can clean that up if necessary.

Closes #16

[Qix-]

Meh the names of those functions kind of rub me the wrong way. Maybe we can improve the names while we're at it. I'll think about it overnight but if you have any ideas feel free to suggest them.

Thanks for the PR :)

[lukekarrys]

I'll agree to the names of the functions not being ideal for public consumption. But I don't have any better names off the top of my head.

I marked this PR as allowing edits from maintainers, so feel free to update if you come up with better names.

[Qix-]

Instead of exporting makeChalkTemplate directly, do you mind instead making a new function called makeTaggedTemplate that does essentially chalk => makeChalkTemplate(makeTemplate(chalk))?

The net effect being that we export makeTemplate which returns just a string->string function, and makeTaggedTemplate that is a tagged template function, both of which take a Chalk instance.

[lukekarrys]

Those suggestion have been implemented. Both functions now take a Chalk instance. Types and tests have been updated as well.

[lukekarrys]

Hey @Qix-, friendly ping on this one 😄

My plan was to use this feature once I've landed chalk@5 (npm/cli#6285) which I am slowly working towards. So no rush! Excited for this since once we are on chalk@5 this feature will be a huge help for us.