Lexer updated for final project
Added introspection functions for new symbols and booleans
Added token "kinds" for final project additions to grammar
Parser updated for final project
Changed eqality symbol from TOKEN_OP to TOKEN_EQUALITY
Removed token introspection function isStatement() from parser and added it to tokenIntrospection.js
Added while and if statements to the ast
Added if and while to the cst
Fixed the errors from project 2 in getSymbolTableEntry()
Getting ready to work on semantic analysis