Add automated test workflow for PRs and push

[egrace479]

Set up automated testing for the repo.

This brings up a challenge: not all hash functions are guaranteed--options are based on the user's system.

We may want to revamp that part of the test to check for system available hash functions and test those, but note if hashes are not covered based on the system?

[egrace479]

@thompsonmj, I got it working with your suggestion. Unfortunately, adding a print statement on what isn't run was not as easy, so we should add a note to the README about it (I'd say after your update in PR #16).

[egrace479]

@thompsonmj, I got it working with your suggestion. Unfortunately, adding a print statement on what isn't run was not as easy, so we should add a note to the README about it (I'd say after your update in PR #16).

Going to just merge update in #16 first, then the auto testing will work since it'll be scoped to the hashes available on the system.

[egrace479]

@thompsonmj, I pulled in your updates and now it seems to be working. I also added -rs after pytest so it will print skipped:

============================= test session starts ==============================
platform linux -- Python 3.[12](https://github.com/Imageomics/sum-buddy/actions/runs/10147680506/job/28058648529?pr=15#step:6:13).4, pytest-8.3.2, pluggy-1.5.0
rootdir: /home/runner/work/sum-buddy/sum-buddy
configfile: pyproject.toml
collected 66 items

tests/test_filter.py .............                                       [ 19%]
tests/test_getChecksums.py .......                                       [ 30%]
tests/test_hasher.py ..............s..................sssss....          [ 93%]
tests/test_mapper.py ....                                                [100%]

=========================== short test summary info ============================
SKIPPED [2] tests/test_hasher.py:54: ripemd[16](https://github.com/Imageomics/sum-buddy/actions/runs/10147680506/job/28058648529?pr=15#step:6:17)0 not available on system and not guaranteed.
SKIPPED [1] tests/test_hasher.py:54: sha512_256 not available on system and not guaranteed.
SKIPPED [1] tests/test_hasher.py:54: sm3 not available on system and not guaranteed.
SKIPPED [1] tests/test_hasher.py:54: sha512_[22](https://github.com/Imageomics/sum-buddy/actions/runs/10147680506/job/28058648529?pr=15#step:6:23)4 not available on system and not guaranteed.
SKIPPED [1] tests/test_hasher.py:54: md5-sha1 not available on system and not guaranteed.
======================== 60 passed, 6 skipped in 0.29s =========================