Fixes for tests

[james-pre]

Hi there @skeate, I fixed a few things and now tests pass:

• Fixed the keys in intrinsicTypeKinds not matching the types in es5.lib.d.ts (intrinsicTypeKinds used Sub, Mul, and Div for keys, but lib.d.ts used Subtract, Multiply, and Divide)
• Fixed getIntrinsicMappingType not working correctly on Integer<any>, Integer<number>, Integer<bigint>
• Renamed Integer to Floor, since that is much less ambiguous
• Added Ceil and Round types
• Extracted the Calculation conditional in getIntrinsicMappingType
• Reduced code duplication in getIntrinsicMappingType/2 and applyNumberMapping/2
• Fixed reference baselines (Some syntax was incorrect)
• Fixed a name collision in recursiveConditionalCrash4 (Renamed a type from Add to AddTuple)
• Accepted some other updated baselines

Please take a look at this, I look forward to getting it merged into Typescript!

[kungfooman]

Thanks so much for this awesome PR! I'm impressed by the work you've done and hope it will merge well with upstream too again ✅ 🚀

Are you still working on it or do you want it merged already?

[skeate]

Thank you for the PR! I'll be honest, I don't have a lot of hope that the Typescript team will merge this feature; I did it more as a proof-of-concept. I figure even if they did want to add this functionality, they'd probably implement it in their own way. Still, nice to have a working example.

[james-pre]

Are you still working on it or do you want it merged already?

It was ready to be merged

I don't have a lot of hope that the Typescript team will merge this feature

There is clearly demand for it. We've done the hard work, it shouldn't be too difficult for them to review and merge. Hopefully they can take a look at it soon!

[kungfooman]

There is clearly demand and the fact we come together to keep it updated represents that - but yea, I see both sides 😅

@skeate Just for completeness, maybe you could update the first PR post from Integer to Floor to not confuse/irritate a potential reviewer?