IVGCVSW-4451 Add QLstm NEON workload

* Adds QLstm workload.
* Adds CreateWorkload and Layer tests.

Signed-off-by: James Conroy <james.conroy@arm.com>
Change-Id: I585eb2691395ee4ccd45b5a853660f90fc5cc821
diff --git a/src/backends/neon/NeonWorkloadFactory.hpp b/src/backends/neon/NeonWorkloadFactory.hpp
index d6968fa..0e9428a 100644
--- a/src/backends/neon/NeonWorkloadFactory.hpp
+++ b/src/backends/neon/NeonWorkloadFactory.hpp
@@ -174,6 +174,9 @@
     std::unique_ptr<IWorkload> CreatePrelu(const PreluQueueDescriptor& descriptor,
                                            const WorkloadInfo& info) const override;
 
+    std::unique_ptr<IWorkload> CreateQLstm(const QLstmQueueDescriptor& descriptor,
+                                           const WorkloadInfo& info) const override;
+
     std::unique_ptr<IWorkload> CreateQuantize(const QuantizeQueueDescriptor& descriptor,
                                               const WorkloadInfo& info) const override;