Do not use root logger

[lachesis]

Calling logging.info() at module level with no logger configured triggers logging.basicConfig() automatically (Python's "last resort" behavior) — which creates a StreamHandler on root with WARNING level.

This poisons logging config for anything downstream of this.

Instead, create a logger scoped to doctr package.

Example repro script:

#!/usr/bin/env python
from doctr.io import Document

import logging
logging.basicConfig(level=logging.INFO)

logging.info("I do not see this")
logging.warning("I still see this")

Output:

WARNING:root:I still see this

Expected:

INFO:root:I do not see this
WARNING:root:I still see this

[lachesis]

Oh I see this anti-pattern is pretty common in doctr. It should really be fixed in all of the affected files. Maybe I'll open a more comprehensive PR later.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.88%. Comparing base (b45b899) to head (6e26e86).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2076      +/-   ##
==========================================
- Coverage   96.93%   96.88%   -0.06%     
==========================================
  Files         156      156              
  Lines        7415     7415              
==========================================
- Hits         7188     7184       -4     
- Misses        227      231       +4     

Flag	Coverage Δ
unittests	96.88% <ø> (-0.06%)	⬇️

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