refactor: improve tsc diagnostics

[kitsonk]

This PR removes a significant amount of logic around TypeScript diagnostics out of the compiler and moves it Rust. Also, it refactors the diagnostics in Rust to be self-contained and more align to idiomatic Rust using fmt.

There is one stylistic change, in that when displaying a line of code, there is a blank line between the message and the code, which makes the message more readable.

JSError can be refactored to align and further improve the Rust side as a seperate PR.

[nayeemrmn]

I don't think the extra new line is more readable with multiple errors since they are only separated a single line. Right now they appear neatly as blocks:

Plus any extraneous new lines are a bit more of a pain for thin integrated terminal views.

Can we instead give a prefix to the source line?

[kitsonk]

I really don't want to get into an ad nauseam debate, so I will simply revert the stylistic change.

[kitsonk]

@bartlomieju finally have the first part of many, took me longer than I thought.

It adds 118 lines (of non test code) to diagnostics.rs but removes 200 lines of JavaScript from the compiler and makes the whole thing a lot cleaner. I also think a further rewrite to JSError will cleanup even more of the code out of fmt_errors.rs.

[bartlomieju]

@kitsonk LGTM, I will land this PR after #7432

[bartlomieju]

LGTM

[bartlomieju]

LGTM, thank you @kitsonk