Transcribe the Compiler Lecture Rust analyzer guide

[spastorino]

Video: https://www.youtube.com/watch?v=ANKBNiSWyfc

[bpfoley]

This lecture is already transcribed at https://github.com/rust-analyzer/rust-analyzer/blob/master/docs/dev/guide.md. It's referred to at the start of the lecture.

[spastorino]

@bpfoley that's cool, I think would be great to see if something can be added or that guide can be linked from rustc-guide.