IVGCVSW-7618 Implement UnidirectionalSequenceLstm operator for Opaque Delegate

 * Intermediate tensors aren't accessible through the new
   Opaque interface yet, so we have to cast to TfLiteNode for now.

Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: Ifd91131e5d5ff6cc057b80729fea9afa68ed240b
diff --git a/delegate/CMakeLists.txt b/delegate/CMakeLists.txt
index ef04913..f0b0e97 100644
--- a/delegate/CMakeLists.txt
+++ b/delegate/CMakeLists.txt
@@ -330,6 +330,8 @@
              test/TransposeConvolution2dTest.cpp
              test/TransposeTest.cpp
              test/TransposeTestHelper.hpp
+             test/UnidirectionalSequenceLstmTest.cpp
+             test/UnidirectionalSequenceLstmTestHelper.hpp
              test/UnpackTest.cpp
              test/UnpackTestHelper.hpp)