Remove `baseUrl` from `tsconfig.base.json`

[hudson-newey]

baseUrl is deprecated and now defaults to ./

This is a bit annoying since we alias the baseUrl to ./src/components and do not use the now default baseUrl.

I suspect that we can temporarily fix this issue with a TypeScript path alias

e.g.

{
  // snip
  "paths": {
    "*": "./src/components"
  },
  // snip
}

[hudson-newey]

When we do this change, we'll have to be 100% sure that we don't break the CDN deployment which is quite common for these types of changes

[atruskie]

oh fun