feat(live-update)!: implement return type ReadyResult

[robingenz]

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• The changes have been tested successfully.
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Close #241

[robingenz]

This feature is now available as dev version until version 7.0.0 is released (as it contains breaking changes):

npm i @capawesome/capacitor-live-update@6.2.0-dev.0a2a6a5.1722676620

The new ReadyResult interface:

/**
 * @since 7.0.0
 */
export interface ReadyResult {
  /**
   * The identifier of the previous bundle used.
   *
   * If `null`, the default bundle was used.
   *
   * @since 7.0.0
   */
  previousBundleId: string | null;
  /**
   * The identifier of the current bundle used.
   *
   * If `null`, the default bundle is being used.
   *
   * @since 7.0.0
   */
  currentBundleId: string | null;
  /**
   * Whether or not the app was reset to the default bundle.
   *
   * @since 7.0.0
   */
  rollback: boolean;
}