Lib-level doc string

[adzialocha]

Closes #246

📋 Checklist

• Add tests that cover your changes
• Add this PR to the Unreleased section in CHANGELOG.md
• Link this PR to any issues it closes
• New files contain a SPDX license header

[codecov]

Codecov Report

Merging #263 (10d43e6) into main (47a7cc9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #263   +/-   ##
=======================================
  Coverage   93.95%   93.95%           
=======================================
  Files          59       59           
  Lines        4928     4928           
=======================================
  Hits         4630     4630           
  Misses        298      298           

Impacted Files	Coverage Δ
aquadoggo/src/lib.rs	100.00% <ø> (ø)

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