Add a button "credentials" to each entry of the services discovered

[cmoulliard]

Proposition

April 24th - 2023: This proposition should be reviewed as we could also keep the credentials attached to the service identity but having the key imported within the service discovered (as it has a reference to a service identity) !

The screen (http://primaza.65.108.212.158.nip.io/services/discovered) displays the list of the discovered services (cluster/namespace) but do not allow to assign for a service discovered their credentials as currently this job is managed using the registered service (= Service identity).

I propose to do different things such as:

• Add a button "credential" to each entry of the services discovered table in order to assign 1-to-Many credentials / service.
• When we click on the button "credential", then we are redirected to the credential screen. This screen includes a table containing zero-to-many credentials and top of this table a form to encode a new credential
• Remove the button "credential" from the services: http://primaza.65.108.212.158.nip.io/services
• Adapt the logic of the method findAvailableServices to return the list of the servicesDiscovered using the entity ServicesDiscovered

Related to tickets: #299 #300