Added Expression Block and moved some expressions

src/Parser/Expression/ExpressionBlock.h

@@ -0,0 +1,11 @@
+#include "Parser/Expression.h"
+
+class ExpressionBlock: public Expression {
+private:
+    vector<shared_ptr<Statement>> statements;
+    shared_ptr<StatementExpression> resultExpression;
+
+public:
+    ExpressionBlock(vector<shared_ptr<Statement>> statements);
+    string toString(int indent) override;
+};