feat: deprecate ofProjectLocationAgentName and ofProjectAgentName (#622)

Author: Neenu1995

proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AgentName.java

@@ -90,11 +90,23 @@ public static AgentName of(String project) {
   }
 
   @BetaApi("The static create methods are not stable yet and may be changed in the future.")
+  public static AgentName ofProjectName(String project) {
+    return newBuilder().setProject(project).build();
+  }
+
+  /** @deprecated Please use {@link #ofProjectName()} instead */
+  @Deprecated
   public static AgentName ofProjectAgentName(String project) {
     return newBuilder().setProject(project).build();
   }
 
   @BetaApi("The static create methods are not stable yet and may be changed in the future.")
+  public static AgentName ofProjectLocationName(String project, String location) {
+    return newProjectLocationAgentBuilder().setProject(project).setLocation(location).build();
+  }
+
+  /** @deprecated Please use {@link #ofProjectLocationName()} instead */
+  @Deprecated
   public static AgentName ofProjectLocationAgentName(String project, String location) {
     return newProjectLocationAgentBuilder().setProject(project).setLocation(location).build();
   }