Move to Typescript

[jlengstorf]

A discussion with @schickling suggested the use of Typescript, since the majority of the GraphQL tooling ecosystem is written in Typescript.

I'm on board with this for the core of GrAMPS, but want to make sure that data sources don't require Typescript. (Doing so would be a huge onboarding problem within my team; it's not possible to just proclaim, "Okay, everyone needs to learn Typescript now!")

@corycook, you've got Typescript experience, right?

[schickling]

I'm on board with this for the core of GrAMPS, but want to make sure that data sources don't require Typescript.

Can confirm this. No problem at all.

[corycook]

Yeah, I can work on this.

[jlengstorf]

@corycook Awesome, thanks! Let's finalize the core features for 1.0 and then we can start the conversion while we build it. I'll start a new issue with a 1.0 checklist so we can make sure everyone's on the same page.