Add Parquet reading and writing for efficient storage of PSM lists

[RalfG]

Added

• io: Read and write support for writing PSMs to Apache Parquet for efficient storage of PSM lists.
• io.sage: Support for Sage results in Parquet format (new SageParquetReader, renamed SageReader to SageTSVReader).

Changed

• Upgrade Pydantic dependency to v2. The PSM spectrum_id field is now always coerced to a string.
• io.proteoscape: Use PyArrow to iteratively read from Parquet instead of first reading an entire dataframe with Pandas.
• io.sage: Update compatibility to Sage v0.14

[codecov]

Codecov Report

Attention: Patch coverage is 83.96226% with 17 lines in your changes are missing coverage. Please review.

Project coverage is 64.19%. Comparing base (2973b67) to head (6a8b51f).

Files	Patch %	Lines
psm_utils/io/proteoscape.py	37.50%	10 Missing ⚠️
psm_utils/io/parquet.py	94.64%	3 Missing ⚠️
psm_utils/io/__init__.py	50.00%	2 Missing ⚠️
psm_utils/io/sage.py	92.30%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #81      +/-   ##
==========================================
+ Coverage   63.27%   64.19%   +0.91%     
==========================================
  Files          25       26       +1     
  Lines        2421     2497      +76     
==========================================
+ Hits         1532     1603      +71     
- Misses        889      894       +5     

Flag	Coverage Δ
unittests	64.19% <83.96%> (+0.91%)	⬆️

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