Added metaprogramming

include/dusk/AST/ASTVisitor.h

include/dusk/AST/Decl.h

include/dusk/AST/DeclNodes.def

include/dusk/AST/Expr.h

include/dusk/AST/ExprNodes.def

include/dusk/AST/Pattern.h

include/dusk/AST/PatternNodes.def

include/dusk/AST/Stmt.h

include/dusk/AST/StmtNodes.def

include/dusk/AST/Type.h

include/dusk/AST/TypeNodes.def

include/dusk/AST/TypeRepr.h

include/dusk/AST/TypeReprNodes.def

include/dusk/Basic/CMakeLists.txt

include/dusk/Basic/TokenDefinition.h

include/dusk/Basic/TokenDefinitions.def

include/dusk/Basic/TokenDefinitions.h

include/dusk/Parse/Parser.h

include/dusk/Parse/Token.h

lib/AST/ASTPrinter.cpp