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- [ ] 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
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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 java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import static java.lang.String.format;
import static org.apache.dubbo.common.config.ConfigurationUtils.parseProperties;
import static org.apache.dubbo.common.constants.CommonConstants.REGISTRY_SPLIT_PATTERN;
import static org.apache.dubbo.common.constants.CommonConstants.REMOTE_METADATA_STORAGE_TYPE;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.CONFIG_FAILED_EXECUTE_DESTROY;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.CONFIG_FAILED_INIT_CONFIG_CENTER;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.CONFIG_FAILED_START_MODEL;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.CONFIG_REFRESH_INSTANCE_ERROR;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.CONFIG_REGISTER_INSTANCE_ERROR;
import static org.apache.dubbo.common.constants.MetricsConstants.PROTOCOL_PROMETHEUS;
import static org.apache.dubbo.common.utils.StringUtils.isEmpty;
import static org.apache.dubbo.common.utils.StringUtils.isNotEmpty;
import static org.apache.dubbo.metadata.MetadataConstants.DEFAULT_METADATA_PUBLISH_DELAY;
import static org.apache.dubbo.metadata.MetadataConstants.METADATA_PUBLISH_DELAY_KEY;
import static org.apache.dubbo.remoting.Constants.CLIENT_KEY;
/**
 * initialize and start application instance
 */
public class DefaultApplicationDeployer extends AbstractDeployer<ApplicationModel> implements ApplicationDeployer {