feat: implement objects and classes

include/vm/fzl_vm.h

@@ -6,6 +6,7 @@
 #include <stddef.h>
 #include <stdint.h>
 #include <vm/fzl_vm_env.h>
+#include <vm/fzl_vm_object.h>
 
 // VM descriptor
 typedef struct
@@ -29,6 +30,9 @@ typedef struct
   // Environment stack
   fzl_vm_env_t *estack[256];
   size_t etop;
+
+  fzl_vm_object_t *objects[256];
+  size_t objects_count;
 } fzl_vm_t;
 
 // Allocate FZL VM

include/vm/fzl_vm_object.h

@@ -0,0 +1,14 @@
+#ifndef FZL_VM_OBJECT_H
+#define FZL_VM_OBJECT_H
+
+#include <common/fzl_value.h>
+#include <stddef.h>
+
+// Object descriptor
+typedef struct
+{
+  fzl_value_t *values;
+  size_t values_count;
+} fzl_vm_object_t;
+
+#endif // FZL_VM_OBJECT_H