Add checker pattern to pump probe for I24 serial

[noemifrisina]

Closes #65

Adds new setting to to the pump probe options, which sends a command to the pmac to only have the pump_repeat applied every other city block.

[codecov]

Codecov Report

Attention: 16 lines in your changes are missing coverage. Please review.

Comparison is base (648f8f7) 48.23% compared to head (281552b) 48.94%.

Files	Patch %	Lines
...4/serial/fixed_target/i24ssx_Chip_Manager_py3v1.py	0.00%	14 Missing ⚠️
...4/serial/fixed_target/i24ssx_Chip_Collect_py3v1.py	81.81%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #66      +/-   ##
==========================================
+ Coverage   48.23%   48.94%   +0.70%     
==========================================
  Files          22       22              
  Lines        3344     3355      +11     
==========================================
+ Hits         1613     1642      +29     
+ Misses       1731     1713      -18     

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[DominicOram]

Looks fine but if we're adding in this new functonality we might as well make it an ophyd device?

[noemifrisina]

Well, the only thing it does is a caput to the pmac string if set to True in the MUX, so it should probably use this Dodal#254 once it's done. For now I mostly wanted to add this new bit so it's available on the beamline

[DominicOram]

Yes, it's small, which means that it's a really easy, small ophyd device. It seems like we might as well add this in ophyd now. Otherwise we'll end up adding more functionality in the old way of doing it whilst also trying to move to the new way of doing it, seems like wasted effort?

[dperl-dls]

Seems fine

Requested changes were made