add id getter for processors

internal/processor/float-random.go

@@ -97,6 +97,10 @@ func (fr *FloatRandom) Process(ctx context.Context, wrappedPayload common.Wrappe
 	return wrappedPayload, errors.New("float.random bitSize error: must be 32 or 64")
 }
 
+func (fr *FloatRandom) Id() string {
+	return fr.config.Id
+}
+
 func (fr *FloatRandom) Type() string {
 	return fr.config.Type
 }