3 PIPE constants missing for win32pipe.CreateNamedPipe()

[dreamflow]

this is a feature request for 3 PIPE constants , that are missing
for the for the paramters "openMode" and "pipeMode" of
win32pipe.CreateNamedPipe()

• Expected behavior :
  that these 3 PIPE constants , as defined for the WinAPI
  function CreateNamedPipeW() , are available via

win32pipe.PIPE_ACCEPT_REMOTE_CLIENTS
win32pipe.PIPE_REJECT_REMOTE_CLIENTS
win32pipe.FILE_FLAG_FIRST_PIPE_INSTANCE

• Steps to reproduce the problem.

import win32pipe
print( win32pipe.PIPE_ACCEPT_REMOTE_CLIENTS )
print( win32pipe.PIPE_REJECT_REMOTE_CLIENTS )
print( win32pipe.FILE_FLAG_FIRST_PIPE_INSTANCE )

• Version of Python and pywin32 :
  pywin32 : 304
  python 64bit : 3.10.5 , 3.9.10
  os : Win10 64bit enterprize 21H2

[dreamflow]

thank you very much @kxrob and @mhammond
for this ultra fast pull request and merge .

[mhammond]

Fixed by #1946