Rewritten example tests

examples/factRec.dusk

examples/factor.dusk

examples/fibonacci.dusk

examples/funcDecl.dusk

examples/gcd.dusk

examples/globExpr.dusk

examples/inOut.dusk

examples/interpRec.dusk

examples/isPrime.dusk

include/dusk/AST/Type.h

lib/IRGen/GenFunc.cpp

lib/IRGen/IRGenFunc.cpp

lib/IRGen/IRGenModule.cpp

lib/Parser/Lexer.cpp

lib/Parser/ParseExpr.cpp

lib/Sema/TypeCheckStmt.cpp

test.cpp