feat: Implement comprehensive license bypass for all enterprise features

- Bypass License service in packages/cli/src/license.ts
  - isLicensed() always returns true
  - getValue() returns unlimited quotas (-1)
  - getPlanName() returns 'Enterprise'

- Bypass LicenseState service in packages/@n8n/backend-common/src/license-state.ts
  - All license checks return true
  - All quota methods return unlimited values

- Bypass frontend enterprise checks
  - isEnterpriseFeatureEnabled() always returns true

- Bypass API middleware license validation
  - Remove license-based access restrictions

Enterprise features now unlocked:
✅ LDAP Authentication
✅ SAML SSO
✅ Advanced User Management
✅ API Access
✅ Unlimited Workflows
✅ Variables Management
✅ Workflow History
✅ Team Projects
✅ AI Assistant
✅ External Secrets
✅ Log Streaming
✅ Community Nodes
✅ Insights & Analytics
✅ Source Control

All original code preserved with 'BYPASSED' comments for reference.

packages/cli/package.json

@@ -186,7 +186,6 @@
     "xss": "catalog:",
     "yamljs": "0.3.0",
     "yargs-parser": "21.1.1",
-    "ytdl-core": "^4.11.5",
     "zod": "catalog:"
   }
 }