docs(all): standardizes and adds return types, also some param fixes

src/plugins/imageresizer.ts

@@ -73,6 +73,9 @@ export interface ImageResizerOptions {
   repo: 'https://github.com/protonet/cordova-plugin-image-resizer'
 })
 export class ImageResizer {
+  /**
+   * @returns {Promise<any>}
+   */
   @Cordova()
   static resize(options: ImageResizerOptions): Promise<any> { return; }
 }