Example:

Officiel Documentation :

 https://api.drupal.org/api/drupal/core!modules!views!views.api.php/function/hook_views_data/8

Use multiple database conncetion with views_data() 

For that you must add 'database'

Example:

Module Name = my_module
Content Type = my_new_content

Create content type

Put this two files into my_module/config/install/

Example 1. SASS (SCSS)

http_path = "/"
css_dir = "css"
sass_dir = "sass"
images_dir = "images"

Example 2. SASS (SCSS)

Form API :
$form['the_text_field']['#attributes']['class'][] = 'ctools-auto-submit-exclude';
OR
'#attributes' => array('class' => array('ctools-auto-submit-exclude')),

Views (using hook_form_alter)