Extend action / Code Generation. Add ability to set the module sequence at generating new module.

[coderimus]

Extend the new Magento 2 module generation with the ability to set module sequence(s).

Module sequence(s) expected view

1. Right-click on the directory
2. Click New
3. Select Magento 2 module menu item and click on it
4. In the opened popup, a new Magento 2 module form opened
5. Add to the form a new section under the "Module dependencies"
6. The label should be named Module sequence(s) and related to the list of Magento project modules. Looks similar to the "Module dependencies".

Module sequence(s) expected behaviour

• At the list of modules, the first item should be "None" and autoselected on form load.
• A developer must be able to select one or several modules in the list.
• Selected modules must be added to the module.xml node of the newly created module.
• If the "None" selected the node should not be added.

Magento dev doc for module dependencies

Module dependencies - Soft dependencies