Add fetch global for Node.js (#189)

Fixes #188

Author: fdiasr

globals.json

@@ -1169,6 +1169,7 @@
 		"Event": false,
 		"EventTarget": false,
 		"exports": true,
+		"fetch": false,
 		"global": false,
 		"Intl": false,
 		"MessageChannel": false,
@@ -1201,6 +1202,7 @@
 		"DOMException": false,
 		"Event": false,
 		"EventTarget": false,
+		"fetch": false,
 		"global": false,
 		"Intl": false,
 		"MessageChannel": false,
@@ -1702,6 +1704,7 @@
 		"DOMException": false,
 		"Event": false,
 		"EventTarget": false,
+		"fetch": false,
 		"Intl": false,
 		"MessageChannel": false,
 		"MessageEvent": false,