Add actions object when there is a declarative copilot file in the output directory

[maisarissi]

Is your feature request related to a problem? Please describe the problem.

No response

Client library/SDK language

None

Describe the solution you'd like

When creating an API Plugin, Kiota should add the actions object in the declarativeCopilot.json file when there is one in the output directory.

    "actions": [
        {
            "id": "<plugin-name>",
            "file": "<plugin-file-generated>" //<plugin-name>-apiplugin.json
        }
    ]

So as an example, for a plugin named githubrepo, the action object would be:

    "actions": [
        {
            "id": "githubrepo",
            "file": "githubrepo-apiplugin.json"
        }
    ]

Additional context

No response

[sebastienlevert]

Should we ask the user to "select" its declarativeCopilot, knowing that in the future there might be more than one supported? And just default to the one in the package for now?

[baywet]

similar to #4476 but not the same.
@maisarissi can you update the specs as well for clarity please?

[maisarissi]

Yes, will do and open a PR.