[Admin] Manage recycling materials categories

[anastk-code4]

User story
As a user, I want to manage recycling materials categories in the platform:

• CRUD
• set display order for the public portal.
• See categories and subcategories in a list, that can be searched.

Description
See Data Dictionary > Materials, for list of recycling materials

User needs to be able to create a materials category

• Category name
• Category icon
• Category order number
  Category order number sets the order of display for the public portal.
  ex: 'Hartie si Carton' is higher in the order than 'Sticla'

User needs to be able to then create Subcategories

• Subcategory name
• Subcategory order number: Subcategory order number sets the order of display in the list for the public portal.
• Input field for associated link to "Dictionar" (ex. for subcategory "Hartie", from "Hartie si Carton" category, link to this page)

User needs to allocate subcategories to a Category, including polyhierarchy options (see data dictionary). Subcategories will be listed in the public portal under the main Category, and also under the secondary Categories.

So when a user performs a search on a subcategory, results will show main category as well as secondary categories.

In the public portal, first display subcategories that have the Category as main, than display subcategories that have the Category as secondary, in the indicated order set by 'Subcategory order number'.

*No figma screen for this
*To better adapt what is implemented now in the staging, please make a separation between Categories (that have icons) list, from subcategories list if possible (Suggestion: use tabs)