Add per-site authorize URL and per-domain token URL OAuth2 plumbing

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

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

@@ -112,7 +112,7 @@ func handleConnectorInitiate(
 		// Union-not-delta because most providers replace rather than
 		// merge. No short-circuit: every reconnect runs the full OAuth
 		// flow so revoked or stale tokens are never silently reused.
-		opts := connector.InitiateOptions{Scopes: requestedScopes}
+		opts := connector.InitiateOptions{Scopes: requestedScopes, Site: r.URL.Query().Get("site")}
 		if existing != nil {
 			opts.Scopes = connector.UnionScopes(existing.Connection.Scopes(), requestedScopes)
 			opts.IncludeGrantedScopes = true