Register Okta connector and wire API-key settings

Register the Okta provider (SupportsAPIKey, APIKeyAuthScheme SSWS, a
required "domain" extra setting, and the driver/name-resolver
factories) and add it to the builtin registry.

The create-API-key resolver normalizes and validates oktaDomain into
OktaConnectorSettings, returning a static INVALID error that never
echoes operator input, and stamps the SSWS scheme onto the
connection. No picker, OAuth metadata, or probe URL: the token plus
domain identify exactly one org and the host is per-connection.

Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>

pkg/server/api/console/v1/connector_resolvers.go

@@ -44,6 +44,7 @@ func (r *mutationResolver) CreateAPIKeyConnector(ctx context.Context, input type
 			APIKey:    input.APIKey,
 			Header:    r.providerRegistry.APIKeyHeader(input.Provider),
 			BasicAuth: r.providerRegistry.APIKeyUsesBasicAuth(input.Provider),
+			Scheme:    r.providerRegistry.APIKeyAuthScheme(input.Provider),
 		},
 	}