Add SigNoz access review driver

Add a SigNoz connector so its organization members can be pulled into
access-review campaign snapshots. SigNoz authenticates with a
SIGNOZ-API-KEY admin service-account key and a customer-supplied base
URL (a SigNoz Cloud region/tenant host or a self-hosted instance).

The driver lists users via GET /api/v1/user, which returns the role
(ADMIN/EDITOR/VIEWER) inline so admin detection works in a single call,
and maps the SigNoz user status (active / pending_invite / deleted) to
the account active flag. The name resolver reads the organization
display name from GET /api/v2/orgs/me to title the access source.

Wire the provider through the coredata enum and settings, the
connector-provider registry (driver and name-resolver factories), the
console API-key input schema and validation, the access-review source
label, and the SigNoz brand logo.

Co-authored-by: Bryan FRIMIN <bryan@frimin.fr>
Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>

apps/console/src/pages/organizations/access-reviews/_components/AccessSourceRow.tsx

@@ -114,6 +114,8 @@ function sourceLabel(connectorProvider: string | null | undefined): string {
       return "Slack";
     case "METABASE":
       return "Metabase";
+    case "SIGNOZ":
+      return "SigNoz";
     default:
       return connectorProvider;
   }

apps/console/src/pages/organizations/access-reviews/dialogs/AddAccessSourceDialog.tsx

@@ -132,6 +132,9 @@ function mapAPIKeyExtraSettingToField(
     case "GRAFANA":
       if (settingKey === "baseUrl") return "grafanaBaseUrl";
       break;
+    case "SIGNOZ":
+      if (settingKey === "baseUrl") return "signozBaseUrl";
+      break;
     case "ONE_PASSWORD":
       if (settingKey === "scimBridgeUrl") return "onePasswordScimBridgeUrl";
       break;