feat: implement objects and classes

include/compiler/fzl_parser.h

@@ -17,6 +17,7 @@ typedef enum
   FZL_NODETYPE_RETURN,
   FZL_NODETYPE_CLASS,
   FZL_NODETYPE_FIELD,
+  FZL_NODETYPE_CONSTRUCT,
 
   FZL_NODETYPE_ADD,
   FZL_NODETYPE_SUB,
@@ -133,6 +134,12 @@ typedef struct fzl_node
       struct fzl_node *parent;
       struct fzl_node *field;
     } memb;
+
+    // Object construct
+    struct
+    {
+      struct fzl_node *name;
+    } construct;
   };
 } fzl_node_t;