improve memdump dotnet

[psolvx]

• adds drakvuf_get_function_argument_ex which allows to override 32bit calling convention to fastcall or thiscall
• uses fastcall for memdump AssemblyNative::LoadImage hook
• splits memdump wanted_hooks to 32 and 64 bit versions and adds --json-clr-64 option for 64bit clr.dll profile
• fixes copy_proc_data_from_priv not copying bitness field
• fixes win_get_pid_from_handle and win_get_tid_from_handle returning false when self pseudo handle is resolved to current pid