feat(enterprise): add comprehensive license management commands (#304) (#308)

* feat(enterprise): add comprehensive license management commands (#304)

- Core license commands (get, update, upload, validate, expiry, features, usage)
- Multi-profile workflow commands for enterprise-wide license management
- License audit across all configured profiles
- Bulk license updates with dry-run support
- Compliance reporting with CSV export
- Automated monitoring with configurable thresholds
- Full documentation with automation examples

* fix(enterprise): resolve clippy warnings in license commands

- Use if-let chains with && syntax for collapsible if statements
- Replace manual range checks with RangeInclusive::contains()
- Ensures clean CI pipeline for PR #308

* fix(enterprise): improve license date parsing for ISO8601 format

- Add support for RFC3339/ISO8601 datetime format (e.g., 2025-10-15T00:18:29Z)
- Maintain backward compatibility with date-only format (e.g., 2025-10-15)
- Fixes days_remaining calculation to correctly show 30 days instead of -1
- All license commands now working correctly with actual Enterprise API responses

Author: joshrotenberg

crates/redisctl/src/cli.rs

@@ -1033,6 +1033,9 @@ pub enum EnterpriseCommands {
     /// Log operations
     #[command(subcommand)]
     Logs(crate::commands::enterprise::logs::LogsCommands),
+    /// License management
+    #[command(subcommand)]
+    License(crate::commands::enterprise::license::LicenseCommands),
 
     /// Migration operations
     #[command(subcommand)]
@@ -1078,6 +1081,9 @@ pub enum CloudWorkflowCommands {
 pub enum EnterpriseWorkflowCommands {
     /// List available workflows
     List,
+    /// License management workflows
+    #[command(subcommand)]
+    License(crate::commands::enterprise::license_workflow::LicenseWorkflowCommands),
 
     /// Initialize a Redis Enterprise cluster
     #[command(name = "init-cluster")]