hictk: support replaying warnings right before app exit

[robomics]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 61.34969% with 63 lines in your changes missing coverage. Please review.

Project coverage is 77.54%. Comparing base (da6732a) to head (cec303a).

Files with missing lines	Patch %	Lines
src/hictk/main.cpp	66.20%	40 Missing and 9 partials ⚠️
src/hictk/cli/cli_fix_mcool.cpp	0.00%	5 Missing ⚠️
src/hictk/cli/cli_dump.cpp	0.00%	4 Missing ⚠️
src/hictk/cli/cli.cpp	50.00%	2 Missing and 1 partial ⚠️
src/hictk/cli/cli_load.cpp	0.00%	1 Missing ⚠️
src/hictk/cli/cli_zoomify.cpp	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #313   +/-   ##
=======================================
  Coverage   77.54%   77.54%           
=======================================
  Files         173      173           
  Lines       21225    21319   +94     
  Branches     2310     2315    +5     
=======================================
+ Hits        16458    16532   +74     
- Misses       3756     3779   +23     
+ Partials     1011     1008    -3     

Flag	Coverage Δ
[tests	integration](https://app.codecov.io/gh/paulsengroup/hictk/pull/313/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=paulsengroup)	68.01% <61.34%> (+0.03%)
[tests	unittests](https://app.codecov.io/gh/paulsengroup/hictk/pull/313/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=paulsengroup)	75.95% <ø> (+0.05%)

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