Rename ASTNodeDataVariant -> DataVariant

src/language/ASTNode.hpp

src/language/CFunctionEmbedder.hpp

src/language/DataVariant.hpp

src/language/FunctionTable.hpp

src/language/SymbolTable.hpp

...anguage/node_processor/ASTNodeExpressionListProcessor.hpp

src/language/node_processor/ASTNodeListProcessor.hpp

src/language/node_processor/AffectationProcessor.hpp

src/language/node_processor/BinaryExpressionProcessor.hpp

src/language/node_processor/BreakProcessor.hpp

src/language/node_processor/CFunctionProcessor.hpp

src/language/node_processor/ConcatExpressionProcessor.hpp

src/language/node_processor/ContinueProcessor.hpp

src/language/node_processor/DoWhileProcessor.hpp

src/language/node_processor/ExecutionPolicy.hpp

src/language/node_processor/FakeProcessor.hpp

src/language/node_processor/ForProcessor.hpp

src/language/node_processor/FunctionProcessor.hpp

src/language/node_processor/INodeProcessor.hpp

src/language/node_processor/IfProcessor.hpp