feat: add self-hosted enterprise restrictions (remote-servers-only, enforce-sso) (#4511)

* feat: add self-hosted enterprise restrictions (remote-servers-only, enforce-sso)

- Add `remoteServersOnly` field to webServerSettings: prevents creating services
  on the local Dokploy VM, forcing all deployments to remote servers. Validated
  in all 8 service routers (application, compose, postgres, mysql, mongo, redis,
  mariadb, libsql).
- Add `enforceSSO` field to webServerSettings: hides the email/password login
  form and shows only the SSO button on the login page.
- Both settings are enterprise-only (enterpriseProcedure) and self-hosted-only
  (blocked at the API level when IS_CLOUD=true).
- UI toggles added to the SSO settings page under a new "Self-hosted
  Restrictions" card (hidden in cloud). Login page reads enforceSSO from
  getServerSideProps to avoid client-side flash.
- Migrations: 0167_fresh_goliath.sql, 0168_long_justice.sql

* fix: add missing final newlines to migration files

* refactor: improve code formatting for better readability in multiple components

- Adjusted formatting in `add-application.tsx`, `add-compose.tsx`, and `add-database.tsx` to enhance readability by adding line breaks and consistent indentation.
- Updated `toggle-enforce-sso.tsx` to simplify the Switch component's props.
- Reformatted imports in `index.tsx` and `sso.tsx` for consistency.
- Cleaned up conditional statements in various router files for improved clarity.

* fix: add enforceSSO to test mock

packages/server/src/db/schema/web-server-settings.ts

@@ -96,6 +96,10 @@ export const webServerSettings = pgTable("webServerSettings", {
 			metaTitle: null,
 			footerText: null,
 		}),
+	// Deployment Configuration (self-hosted only)
+	remoteServersOnly: boolean("remoteServersOnly").notNull().default(false),
+	// Auth Configuration (self-hosted only)
+	enforceSSO: boolean("enforceSSO").notNull().default(false),
 	// Cache Cleanup Configuration
 	cleanupCacheApplications: boolean("cleanupCacheApplications")
 		.notNull()
@@ -155,6 +159,8 @@ export const apiUpdateWebServerSettings = createSchema.partial().extend({
 	cleanupCacheApplications: z.boolean().optional(),
 	cleanupCacheOnPreviews: z.boolean().optional(),
 	cleanupCacheOnCompose: z.boolean().optional(),
+	remoteServersOnly: z.boolean().optional(),
+	enforceSSO: z.boolean().optional(),
 });
 
 export const apiAssignDomain = z