* Implementation of MMAP for ONNX FE
* fix win offsets
* added virtual dtor to MappedMemory
* review remarks. part.1
* added disable mmap flag to MO
* added additional checks to mmap
* remove unnecessary const
* fix pybind default value
* Added args.disable_mmap = False to MO tests
* fixed MO test
* avoid global headers
* fix casting for win
* disable mmap for legacy frontends flow
* review remarks
* Fixed passing parameters
* added doc to MappedMemory and load_mmap_object