UI: Add API url in API Key window

[pcrespov]

When a user generate the API keys, it would be handy to have the base-url as well at hand (in all deploys except for AWS-production osparc.io because that is the default). Those are the three elements needed to setup the API configuration

### Event Horizon
- [ ] https://github.com/ITISFoundation/osparc-simcore/pull/6843
- [ ] https://github.com/ITISFoundation/osparc-simcore/issues/6340

[pcrespov]

• add api url in statics so that front-end can display correct.
• add doc api as well

[pcrespov]

@giancarloromeo please return the api entrypoint in the response to create an api-key. Check app.request.url

[giancarloromeo]

See #6340 for proper api_base_url generation.

[giancarloromeo]

@odeimaiz the updated OpenAPI Spec is in services\web\server\src\simcore_service_webserver\api\v0\openapi.yaml

In particular, the CREATE API KEY endpoint (POST /v0/auth/api-keys):

The API Key creation returns (just the first time!) 2 new fields:

• id will be used for subsequent GET and DELETE operations
• api_base_url must be returned in the UI as sketched above.