Add options to Paths

[fardolieri]

Fixes #917

Introduce PathsOptions with maxRecursionDepth.

Things up for debate

• By introducing the new options parameter, which adds a bit more complexity, the previous test-case
  

  type-fest/test-d/paths.ts

  Line 109 in 8a45ba0

  type MyEntityPaths = Paths<MyEntity>;

  
  worked fine with the old recursion limit of 15 but now throws an error "Type instantiation is excessively deep and possibly infinite". Setting the limit to 14 fixes it. Technically, this introduces a small breaking change.
  In my experience, most paths that are more than 4 levels deep do not really add value most of the time. So I would suggest having a smaller default like 8 or 10. This would speed up type checking times for users and slightly reduce the bloated wall of intellisense suggestions. If users need more, they can set maxRecursionDepth manually.
• I'm not sure why InternalPaths is currently exported. Perhaps so that users have a way to get their hands on the Depth parameter. If that is the only reason, we could consider not exporting it now that Paths supports it.

[voxpelli]

Related: #919

[voxpelli]

Might have caused a regression: #922