Update chunk.h

Author: AzliRynz

chunk.h

@@ -7,6 +7,24 @@
 
 #define MAX_CONSTANTS 65536
 
+typedef enum {
+    OP_CONSTANT,
+    OP_NIL,
+    OP_TRUE,
+    OP_FALSE,
+    OP_EQUAL,
+    OP_GREATER,
+    OP_LESS,
+    OP_ADD,
+    OP_SUBTRACT,
+    OP_MULTIPLY,
+    OP_DIVIDE,
+    OP_NOT,
+    OP_NEGATE,
+    OP_PRINT,
+    OP_RETURN,
+} OpCode;
+
 typedef struct {
     uint8_t* code;
     int* lines;