create HierarchyTreeStructureViewer (based on HierarchyViewTestBase) for check CallTreeStructure
remove write cache from CallHierarchyCacheManager
add some changes to Dynamic CallHierarchyTest
remove checkTreeStructure from PyCallHierarchyTest
turn on save signatures in PyDebuggerOptionsProvider
remove bug related with removing CallHierarchyData from PyHierarchyCallCacheManager
create PyCallHierarchyTask for test dynamic collecting CallHierarchyData
create Dynamic test