<!-- If you need to report a security issue please visit https://github.com/apache/dubbo/security/policy -->

- [ ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.

## Describe the proposal
<!-- Please use this for a concrete design proposal for functionality. -->
<!-- If you just want to request a new feature and discuss the possible business value, create a Feature Request. -->

EN:
Observability task, optimizing thread pool index embedding function
1 Need to specify a name for the core thread pool
2 Core thread pool index is not effective
3. Remove the frame-level indicators and only keep the core monitoring indicators (the frame-level code type is completely deleted and will be considered later)

可观测性任务，优化线程池指标埋点功能
1需要为核心线程池指定名称
2核心线程池指标生效问题
3移除框架层指标只保留核心监控指标
import org.apache.dubbo.config.ApplicationConfig;
import org.apache.dubbo.config.ConfigCenterConfig;
import org.apache.dubbo.config.DubboShutdownHook;
import org.apache.dubbo.config.MetadataReportConfig;
import org.apache.dubbo.config.MetricsConfig;
import org.apache.dubbo.config.RegistryConfig;
import org.apache.dubbo.config.context.ConfigManager;
import org.apache.dubbo.config.utils.CompositeReferenceCache;
import org.apache.dubbo.config.utils.ConfigValidationUtils;
import org.apache.dubbo.metadata.report.MetadataReportFactory;
import org.apache.dubbo.metadata.report.MetadataReportInstance;
import org.apache.dubbo.metrics.collector.DefaultMetricsCollector;
import org.apache.dubbo.metrics.event.GlobalMetricsEventMulticaster;
import org.apache.dubbo.metrics.model.TimePair;
import org.apache.dubbo.metrics.registry.event.RegistryEvent;
import org.apache.dubbo.metrics.report.MetricsReporter;
import org.apache.dubbo.metrics.report.MetricsReporterFactory;
import org.apache.dubbo.metrics.service.MetricsServiceExporter;
import org.apache.dubbo.registry.client.metadata.ServiceInstanceMetadataUtils;
import org.apache.dubbo.registry.support.RegistryManager;
import org.apache.dubbo.rpc.model.ApplicationModel;
import org.apache.dubbo.rpc.model.ModuleModel;
import org.apache.dubbo.rpc.model.ScopeModel;
import org.apache.dubbo.rpc.model.ScopeModelUtil;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;