add community template for Cordova

Co-Authored-By: Andre Christoga S <christoga@users.noreply.github.com>
Co-Authored-By: Chaoyi Zha <hello@chaoyizha.com>

community/JavaScript/Cordova.gitignore

+# gitignore template for the Cordova framework
+# website: https://cordova.apache.org/
+#
+# Recommended template: Node.gitignore
+
+# App platform binaries and built files
+/platforms
+
+# Optional to ignore plugin Git clones
+#/plugins