Refactor Forced Import

 * Find and replace all workloads associated with imported IO
 * Only attempt tensorhandle replacement if supported by all workloads
 * Add new RefBaseWorkload to enable forced input for ref backend
 * Store imported tensorhandles in preImportedTensorhandles instead of outputHandles
 * Create pre-imported tensorhandles at network load-time
 * Front load import workload validation to load network time
 * Only call ReplaceTensorHandle when needed

Change-Id: I3816a71b7f57ae90388bb16462a75d4ef3544fa7
Signed-off-by: Finn Williams <finn.williams@arm.com>
diff --git a/src/backends/reference/workloads/RefDetectionPostProcessWorkload.cpp b/src/backends/reference/workloads/RefDetectionPostProcessWorkload.cpp
index 4bc9eb1..5f01db3 100644
--- a/src/backends/reference/workloads/RefDetectionPostProcessWorkload.cpp
+++ b/src/backends/reference/workloads/RefDetectionPostProcessWorkload.cpp
@@ -15,7 +15,7 @@
 
 RefDetectionPostProcessWorkload::RefDetectionPostProcessWorkload(
         const DetectionPostProcessQueueDescriptor& descriptor, const WorkloadInfo& info)
-        : BaseWorkload<DetectionPostProcessQueueDescriptor>(descriptor, info),
+        : RefBaseWorkload<DetectionPostProcessQueueDescriptor>(descriptor, info),
           m_Anchors(std::make_unique<ScopedTensorHandle>(*(descriptor.m_Anchors))) {}
 
 void RefDetectionPostProcessWorkload::Execute() const