[dynamic control] add OpampPolicyProvider for the policy pipeline (#2748)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: jackshirazi

dynamic-control/build.gradle.kts

@@ -13,6 +13,9 @@ java {
 }
 
 dependencies {
+  implementation(project(":opamp-client"))
+  implementation("com.squareup.okhttp3:okhttp")
+
   annotationProcessor("com.google.auto.service:auto-service")
   compileOnly("com.google.auto.service:auto-service-annotations")