message: docs: add documentation for app.getDeployStatus
diff: # App
  +- [getDeployStatus](#getDeployStatus)
  - [getFormFields](#getFormFields)
  - [addFormFields](#addFormFields)
  - [updateFormFields](#updateFormFields)
  @@ -26,6 +27,28 @@ const client = new KintoneRestAPIClient();
  ## Methods
  +### getDeployStatus
  +
  +Gets the deployment status of the app settings for multiple apps.
  +
  +#### Parameters
  +
  +| Name | Type | Required | Description |
  +| ---- | :-----------------------: | :------: | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
  +| app | Array\<Number or String\> | Yes | The list of apps to check the deploy statuses of. The maximum limit is 300.<br />If apps in guest spaces are specified, all apps specified in the request must belong to that guest space. |
  +
  +#### Returns
  +
  +| Name | Type | Description |
  +| ------------- | :----: | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
  +| apps | Array | A list of objects with data of deploy statuses. |
  +| apps[].app | String | The app ID. |
  +| apps[].status | String | The status of the deployment of app settings.<ul><li>`PROCESSING`: The app settings are being deployed.</li><li>`SUCCESS`: The app settings have been deployed.</li><li>`FAIL`: An error occurred, and the deployment of app settings failed.</li><li>`CANCEL`: The deployment of app settings was canceled, due to the deployment of other app settings failing.</li></ul> |
  +
  +#### Reference
  +
  +- https://developer.kintone.io/hc/en-us/articles/115004890947
  +
  ### getFormFields
  Gets the list of fields and field settings of an App.
  