SWDEV-497841 - Add max alloc test for MemPool (#108)

Stress mempool with a lot of big memory allocations.
The test requires >30MB of free memory.

catch/unit/memory/CMakeLists.txt

@@ -142,6 +142,7 @@ set(TEST_SRC
     hipMemPoolSetGetAttribute.cc
     hipMemPoolCreate.cc
     hipMemPoolDestroy.cc
+    hipMemPoolMaxAlloc.cc
     hipMemPoolTrimTo.cc
     hipMallocFromPoolAsync.cc
     hipMemcpyPeer.cc