Using f-strings and log on import

[ehsteve]

This cleans up the code to use fstrings instead of the format syntax. fstrings make the code much cleaner. Also updated the code standards to say to use fstrings.

This also adds a log message on import to show the version number of the package on import. Useful for debugging purposes.

Addresses issues #27, #23.

[dbarrous]

Overall looks good to me! Definitely prefer this formatting over the .format(), way easier to read and make sense of. Did notice two little nitpicks but other than that ✅

[dbarrous]

Also just noticed there a few merge conflicts, you might want to re-sync your branch with main or if you give me the go ahead I can resolve them for you ^

[codecov]

Codecov Report

Merging #28 (fc61996) into main (4e4a029) will increase coverage by 0.11%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##             main      #28      +/-   ##
==========================================
+ Coverage   75.96%   76.07%   +0.11%     
==========================================
  Files           5        5              
  Lines         208      209       +1     
==========================================
+ Hits          158      159       +1     
  Misses         50       50              

Impacted Files	Coverage Δ
hermes_core/util/config.py	55.81% <0.00%> (ø)
hermes_core/util/util.py	90.90% <83.33%> (+0.13%)	⬆️

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