adding changes to proto

Author: Akshay2191

api/grpc/mpi/v1/command.pb.go

@@ -352,6 +352,8 @@ message APIDetails {
     string location = 1;
     // the API listen directive
     string listen =  2;
+    // the API Ca directive
+    string Ca = 3;
 }
 
 // A set of runtime NGINX App Protect settings

api/grpc/mpi/v1/command.pb.validate.go

@@ -678,6 +678,7 @@ Perform an associated API action on an instance
 | ----- | ---- | ----- | ----------- |
 | location | [string](#string) |  | the API location directive |
 | listen | [string](#string) |  | the API listen directive |
+| Ca | [string](#string) |  | the API Ca directive |