Bootstrap can not be added directly to the admin of a plugin, but you can wrap your plugin in a container and compile the Bootstrap CSS to use it as a wrapper.
I do my compiling using SimpLess
In the past you could do this using SimpLess directly (my-own-bootstrap.less).
@import (less) url( 'bootstrap.css' );
This fails with the latest version of Bootstrap. But you can just paste the Bootstrap CSS into the LESS file and compile it that way.
// Paste Bootstrap CSS here
Run it through SimpLess and after that the new CSS can be enqueued in WordPress ! This also works nicely with themes from Bootswatch.
wp_enqueue_style( $this->plugin_slug .'-my-bootstrapstyle', plugins_url( 'css/my-bootstrapstyle.css', __FILE__ ), array(), $this->version );