added 'FINDSTR' when windows machine instead of grep

[msivasubramaniaan]

Problem:

vscode-openshift-tools/src/oc/ocWrapper.ts

Line 380 in 2e489f5

const result = await CliChannel.getInstance().executeTool(new CommandText('oc api-resources | grep openshift'));

always fails in windows machine wrt 'grep' command.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2e489f5) 33.24% compared to head (12af72f) 33.26%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3715      +/-   ##
==========================================
+ Coverage   33.24%   33.26%   +0.02%     
==========================================
  Files          84       84              
  Lines        6136     6138       +2     
  Branches     1253     1254       +1     
==========================================
+ Hits         2040     2042       +2     
  Misses       4096     4096              

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[vrubezhny]

This probably is related to #3493 - I can't reproduce this on Linux, but it definitely could be a reason of the issue on Windows side. So this PR could probably fix #3493

[datho7561]

Looks good. Without this change, I can't see the link to open the OpenShift Dashboard, but with it I can.