Added Expression Block and moved some expressions

src/Parser/Expression/ExpressionLiteral.h

@@ -0,0 +1,23 @@
+#include "Parser/Expression.h"
+
+#include <iostream>
+
+using namespace std;
+
+class ExpressionLiteral: public Expression {
+private:
+    bool boolValue;
+    int32_t sint32Value;
+    float real32Value;
+    
+    ExpressionLiteral();
+
+public:
+    static shared_ptr<ExpressionLiteral> none;
+
+    ExpressionLiteral(shared_ptr<Token> token);
+    bool getBoolValue();
+    int32_t getSint32Value();
+    float getReal32Value();
+    string toString(int indent) override;
+};