feat(sso): implement SSO provider retrieval functionality

- Added a new service to fetch SSO providers from the database, including relevant fields such as id, providerId, issuer, domain, oidcConfig, and samlConfig.
- This functionality will support future enhancements in SSO integration.

packages/server/src/services/proprietary/sso.ts

@@ -0,0 +1,15 @@
+import { db } from "@dokploy/server/db";
+
+export const getSSOProviders = async () => {
+	const providers = await db.query.ssoProvider.findMany({
+		columns: {
+			id: true,
+			providerId: true,
+			issuer: true,
+			domain: true,
+			oidcConfig: true,
+			samlConfig: true,
+		},
+	});
+	return providers;
+};