winscard/tests: Add the tests file

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
http://testbot.winehq.org/JobDetails.pl?Key=15123

Your paranoid android.


=== W2KPROSP4 (32 bit winscard) ===
winscard.c:53: Test failed: SCardIsValidContext expected SCARD_E_INVALID_HANDLE, received 00000006
winscard.c:64: Test failed: SCardReleaseContext expected SCARD_E_INVALID_HANDLE, received 00000006