feat: Implement compiler and virtual machine for Fig language

- Added Compiler class with methods for compiling programs, statements, and expressions.
- Introduced Proto structure to hold compiled bytecode and constants.
- Implemented expression compilation including literals, identifiers, and infix expressions.
- Developed statement compilation for variable declarations and expression statements.
- Created a VM class to execute compiled bytecode with support for arithmetic and comparison operations.
- Added Object and Value classes for handling different data types and memory management.
- Implemented String and Struct objects for enhanced data representation.
- Established a parser for parsing variable declarations and statements.
- Included tests for the VM and object representations.

src/Object/ObjectTest.cpp

@@ -0,0 +1,20 @@
+#include <Object/ObjectBase.hpp>
+#include <iomanip>
+#include <iostream>
+#include <cmath>
+#include <numbers>
+
+int main()
+{
+    using namespace Fig;
+    
+    Value null;
+    Value d = Value::FromDouble(-std::numbers::pi);
+    Value i = Value::FromInt(-2143242);
+    Value b = Value::FromBool(false);
+
+    std::cout << null.ToString() << '\n';
+    std::cout << d.ToString() << '\n';
+    std::cout << i.ToString() << '\n';
+    std::cout << b.ToString() << '\n';
+}