1068: profiling crate first draft r=matklad a=pasa
I've made this first draft for #961
Could you look at it? Is this something what you are looking for?
It has lack of tests. I can't figure out how to test stderr output in rust right now. Do you have some clues?
Additionally I'm thinking about to implement procedural macros to annotate methods with this profiler. Will it be helpful?
Co-authored-by: Sergey Parilin <sergey.parilin@fxdd.com>
This makes it more like the other code model types.
Also make Module::definition_source/declaration_source return HirFileIds, to
make them more like the other source functions.
