feat(server): support installable license (#12181)

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
  - Added support for installing self-hosted team licenses via encrypted license files.
  - Introduced a new "Onetime" license variant for self-hosted environments.
  - Added a GraphQL mutation to upload and install license files.
  - License details now display the license variant.

- **Bug Fixes**
  - Improved error messages for license activation and expiration, including dynamic reasons.

- **Localization**
  - Updated and improved license-related error messages for better clarity.

- **Tests**
  - Added comprehensive end-to-end tests for license installation scenarios.

- **Chores**
  - Enhanced environment variable handling and public key management for license verification.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/src/plugins/payment/license/controller.ts

@@ -62,7 +62,9 @@ export class LicenseController {
     await using lock = await this.mutex.acquire(`license-activation:${key}`);
 
     if (!lock) {
-      throw new InvalidLicenseToActivate();
+      throw new InvalidLicenseToActivate({
+        reason: 'Too Many Requests',
+      });
     }
 
     const license = await this.db.license.findUnique({
@@ -72,7 +74,9 @@ export class LicenseController {
     });
 
     if (!license) {
-      throw new InvalidLicenseToActivate();
+      throw new InvalidLicenseToActivate({
+        reason: 'License not found',
+      });
     }
 
     const subscription = await this.manager.getSubscription({
@@ -85,7 +89,9 @@ export class LicenseController {
       license.installedAt ||
       subscription.status !== SubscriptionStatus.Active
     ) {
-      throw new InvalidLicenseToActivate();
+      throw new InvalidLicenseToActivate({
+        reason: 'Invalid license',
+      });
     }
 
     const validateKey = randomUUID();
@@ -144,7 +150,9 @@ export class LicenseController {
     }
 
     if (license.validateKey && license.validateKey !== revalidateKey) {
-      throw new InvalidLicenseToActivate();
+      throw new InvalidLicenseToActivate({
+        reason: 'Invalid validate key',
+      });
     }
 
     const validateKey = randomUUID();