dillon1000/react

[rust] Improved name resolution

This is the start of an improved semantic analysis pass, reusing the 
ScopeManager added earlier in the stack but with new analysis built using the 
new visitor trait. The logic is a rough port of 


https://github.com/facebook/hermes/blob/main/tools/hermes-parser/js/hermes-eslint/src/scope-manager/referencer/Referencer.js 

Lots of bits are still missing, i'm starting with the parts that Forget needs.