Added the TypeScript support.

[Willaiem]

Hi Kent!

I managed to convert this workshop from JavaScript to TypeScript.
I tested this myself and it's working as intended. 😊

I'm aware that in different workshops, the TypeScript version exists within the "next" branch, but because it doesn't exist, I wanted to let you know in some way that I wanted to apply my changes.

My additional notes:

• globe/index.tsx - I decided to add the @ts-nocheck because I couldn't manage to resolve the typings issues. I think that this isn't as important to be typed as other parts of the workshop (but I can be wrong).
• In exercises 5 and 6, precisely in the Cell component, I had an issue with accessing the cell number within the state.grid.
  const cell = state.grid[row][column] - this throws error in TypeScript since it could be undefined.
  I managed to fix this by creating an array and trying to access it.
  const cell = Array.from(state.grid[row] ?? [])[column] ?? 0
  But for me, it looks like an excessive workaround and I presume that there's a better solution than this.

[kentcdodds]

This is awesome to have! I'll try to give this a look soon. I just got a new job and may not have time soon/ever 😅 but hopefully what you've done here will be useful to others!