Begin reorganization of AST construction to reduce compilation time

src/language/ASTBuilder.cpp

src/language/ASTBuilder.hpp

src/language/ASTNode.hpp

src/language/ASTNodeAffectationExpressionBuilder.cpp

src/language/ASTNodeAffectationExpressionBuilder.hpp

src/language/ASTNodeBinaryOperatorExpressionBuilder.cpp

src/language/ASTNodeBinaryOperatorExpressionBuilder.hpp

src/language/ASTNodeDataType.cpp

src/language/ASTNodeDataType.hpp

src/language/ASTNodeExpressionBuilder.cpp

src/language/ASTNodeExpressionBuilder.hpp

src/language/CMakeLists.txt

src/language/PEGGrammar.hpp

src/language/PugsParser.cpp

src/language/SymbolTable.hpp