LibJS: Add "Heap" and "Runtime" subdirectories

Let's try to keep LibJS tidy as it expands. :^)

Libraries/LibJS/Runtime/GlobalObject.cpp

@@ -0,0 +1,31 @@
+#include <AK/LogStream.h>
+#include <AK/String.h>
+#include <LibJS/Heap/Heap.h>
+#include <LibJS/Interpreter.h>
+#include <LibJS/Runtime/ConsoleObject.h>
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/NativeFunction.h>
+#include <LibJS/Runtime/Value.h>
+#include <stdio.h>
+
+namespace JS {
+
+GlobalObject::GlobalObject()
+{
+    put_native_function("print", [](Object*, Vector<Value> arguments) -> Value {
+        for (auto& argument : arguments)
+            printf("%s ", argument.to_string().characters());
+        return js_undefined();
+    });
+    put_native_function("gc", [](Object* this_object, Vector<Value>) -> Value {
+        dbg() << "Forced garbage collection requested!";
+        this_object->heap().collect_garbage();
+        return js_undefined();
+    });
+}
+
+GlobalObject::~GlobalObject()
+{
+}
+
+}