[Super Admin] implement "Add organization" flow

[teodoranegru]

As a Super Admin user, I want to be able to add organizations/institutions to the platform.

Main flows

Add organization:

1. Super Admin user navigates to the "Utilizatori instituționali" page
2. User clicks on "Adaugă o instituție" button
3. The system retrieves the "Adaugă instituție" page (see design here)
4. User fills in the fields from the "Detalii organizație" step/tab
5. User clicks on the "Pasul următor" button
6. System retrieves the "Centre" step/tab
7. User fills in the information about the center/tenant
   IF the organization has more than 1 center
   7.1. User clicks in the "Adaugă încă un centru" button
   7.2. System displays a repeater component
   7.3. User fills in the information about the center
8. User clicks on the "Pasul următor" button
9. The system retrieves the "Administrator" step/tab
10. User fills in the information about the NGO Admin user
    IF they want to have more than 1 NGO Admin user accounts
    10.1 User clicks in the "Adaugă încă un administrator" button
    10.2. System displays a repeater component
    10.3. User fills in the information about the other NGO Admin user
11. User clicks on the "Finalizează" button
12. The system retrieves the "Utilizatori instituționali" page with the added institution in the "Toate instituțiile" table, displays the success message and sends the invitation email to the email address(es) filled in the Email field for (each) NGO Admin user (see here the email template)

Edit details insitution

1. Super Admin user navigates to the "Utilizatori instituționali" page
2. User cliks on the "Vezi detalii" button
3. System retrieves the institution profile page (link)
4. User clicks on the "Editează" button
5. System retireves the "Editează detalii organizație" page
6. User edits the information and clicks on the "Salvează modificările" button
7. System retrieves the institution profile page and displays the success message

Deactivate institution

1. Super Admin user navigates to the "Utilizatori instituționali" page
2. User cliks on the "Vezi detalii" button
3. System retrieves the institution profile page
   IF instituiton status=Activ/Pending
4. User clicks on the "Dezactivează organizație" button
5. System retrieves the "Dezactivează organizație" modal screen (link)
6. User clicks on the "Dezactvează organizație" button
7. System restricts platform access for all users from that organization; organisation status=Suspendat; displays the "Reactivează organizație" button

Business rules

1. An institution has to have at least 1 center and 1 administrator. The user can't delete the last center/admin.
2. When an institution is created, the default status is Pending until 1 of the administrators accesses their account (sets the password) when the status changes to Activ. If the organization is deactivated by the super admin, the status changes to Suspendat.

[teodoranegru]

The NGO Admin user will be displayed in the Staff table `with no role and all permissions selected (cannot be unselected)