Create ISSUE_TEMPLATE.md

.github/ISSUE_TEMPLATE.md

+<!--
+this **only** track bugs regarding the v2 of gl-react-native. if you are using v3, please go on github.com/gre/gl-react
+-->
+
+#### library version
+
+```bash
+npm ls gl-react gl-react-native # Please run and paste the output of this
+```