feat(IsDebug): add the IsDebug plugin (#475)

src/plugins/is-debug.ts

@@ -0,0 +1,35 @@
+import {Plugin, Cordova} from './plugin';
+
+/**
+ * @name IsDebug
+ * @description
+ * Detect if the app is running in debug mode or not.
+ * Debug mode is when the app is built and installed locally via xcode / eclipse / the cordova cli etc, compared to release mode when the app was downloaded from the app / play store via an end user.
+ *
+ * @usage
+ * ```
+ * import {IsDebug} from 'ionic-native';
+ *
+ * IsDebug.getIsDebug()
+ *   .then((isDebug: boolean) => console.log('Is debug:', isDebug))
+ *   .catch((error: any) => console.error(error));
+ *
+ * ```
+ */
+@Plugin({
+  plugin: 'cordova-plugin-is-debug',
+  pluginRef: 'cordova.plugins.IsDebug',
+  repo: 'https://github.com/mattlewis92/cordova-plugin-is-debug'
+})
+export class IsDebug {
+
+  /**
+   * Determine if an app was installed via xcode / eclipse / the ionic CLI etc
+   * @return {Promise<boolean>} Returns a promise that resolves with true if the app was installed via xcode / eclipse / the ionic CLI etc. It will resolve to false if the app was downloaded from the app / play store by the end user.
+   */
+  @Cordova()
+  static getIsDebug(): Promise<boolean> {
+    return;
+  }
+
+}