Dynamic thread pool access Prometheus monitoring, add test cases (#96)

hippo4j-example/hippo4j-core-nacos-spring-boot-starter-example/pom.xml

@@ -49,6 +49,16 @@
             <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
             <version>2.2.5.RELEASE</version>
         </dependency>
+
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-registry-prometheus</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
     </dependencies>
 
 </project>

hippo4j-example/hippo4j-core-nacos-spring-boot-starter-example/src/main/resources/bootstrap.yaml

@@ -3,6 +3,18 @@ server:
   servlet:
     context-path: /example
 
+management:
+  metrics:
+    export:
+      prometheus:
+        enabled: true
+  server:
+    port: 29999
+  endpoints:
+    web:
+      exposure:
+        include: '*'
+
 spring:
   profiles:
     active: dev