dillon1000/react

[rust] Use hermes parser for Forget fixture tests

Replaces the use of SWC parser in the Forget fixture tests with Hermes Parser. 
This includes aligning on a single type to represent JS Values and numbers 
(combining semi-duplicated code from forget_hir and forget_estree) and adding 
support for lowering babel-style 
NumericLiteral/BooleanLiteral/StringLiteral/NullLiteral node types (since Hermes 
Parser produces a mix of estree/babel node types)