Correct integer types in index catalog creation

[delucchi-cmu]

Change Description

In service of astronomy-commons/lsdb#108

Uses the new preferred uint8/uint64 integer types for the Norder/Dir/Npix partition info columns in a generated index catalog. Needed to also update the test data for the small sky test catalog to use the right integer types, and pulls the typing information from the resulting catalog's metadata file.

Code Quality

• I have read the Contribution Guide
• My code follows the code style of this project
• My code builds (or compiles) cleanly without any errors or warnings
• My code contains relevant comments and necessary documentation

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0ba5bcb) 99.45% compared to head (abf6d9e) 99.45%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #200   +/-   ##
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  Coverage   99.45%   99.45%           
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  Files          29       29           
  Lines        1455     1459    +4     
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+ Hits         1447     1451    +4     
  Misses          8        8           

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