563 category attribute generator

[ProkopovVitaliy]

Description (*)

Added category eav attribute generation:

• When we try generate new attribute for category, automatically we get generated form configuration:

1. Generate multiselect attribute with custom options:
   

2. We get next generated data patch:
   

3. Generated category_form.xml file:
   

4. After bin/magento setup:upgrade we will see new attribute in admin panel form:
   

• Create attribute with not-usual attribute data:

1. Attribute configuration:
   

2. Generated data patch:
   

3. Updated category_form.xml file with new field-set:
   

4. Run bin/magento setup:upgrade and check admin panel:
   

• Create attribute with autogenerated source:

1. Attribute configuration:
   

2. Check generated data patch and source model:
   

3. Check updated category_form.xml file with updated early added field-set:
   

4. Run bin/magento setup:upgrade and check admin panel:
   

Fixed Issues (if relevant)

1. Fixes Category attribute setup patch generator #563

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with integration/functional tests (if applicable)
• All automated tests passed successfully (all builds are green)

[eduard13]

Thank you @ProkopovVitaliy for this great feature. However, I'd suggest the following improvements that might be done as separate PRs.

1. Change a bit the order of fields. First field should be Label, based on which the Attribute Code should be autocompleted
2. Provide a fields' validation as we did for Entity Generator
3. Pay attention at the following PR, as it also actual in scope of Product/Category Attribute generators
4. We should be more strict with Group, because if we enter My Group, then Magento generates it as my-group, however the generator adds it as my_group in ui_component form file

Thank you.