[FIX] Change hipCT microscopy suffix to XPCT

[chourroutm]

Following the discussion at #1646, I am reverting @balbasty's PR #1686 with XPCT instead of hipCT: it is more suited for a broader audience.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.92%. Comparing base (3fd21ff) to head (f16bd8f). Report is 316 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1822   +/-   ##
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  Coverage   87.92%   87.92%           
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  Files          16       16           
  Lines        1375     1375           
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  Hits         1209     1209           
  Misses        166      166           

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