fix: replace wildcard import with specific UUID import in AbstractResourceConfig

The PR #703 introduced a wildcard import (import java.util.*) in
AbstractResourceConfig.kt, which was unnecessary since only UUID is used.
This commit fixes the import to use the specific class import
(import java.util.UUID) while preserving all the intended functionality
from PR #703:

- Added 'log' property to resources and interceptors
- Implementation of custom log message processing with template support
- Tests for resource and interceptor logging
- Documentation updates

This fix ensures the build passes while maintaining the new logging
feature's functionality.

Author: claude

core/api/src/main/java/io/gatehill/imposter/plugin/config/resource/AbstractResourceConfig.kt

@@ -48,7 +48,7 @@ import io.gatehill.imposter.plugin.config.capture.CaptureConfigHolder
 import io.gatehill.imposter.plugin.config.capture.ItemCaptureConfig
 import io.gatehill.imposter.plugin.config.security.SecurityConfig
 import io.gatehill.imposter.plugin.config.security.SecurityConfigHolder
-import java.util.*
+import java.util.UUID
 
 /**
  * Base configuration for plugins and sub-resources.