ProteoScape / TIMScore improvements

[RalfG]

Added

• io.proteoscape: Allow ProteoScapeReader instantiation from Pandas DataFrame and access PSM by index.

Changed

• io.proteoscape: Rename module from TIMScore to ProteoScape.
• io.proteoscape: Use correct search engine score (x_corr_score instead of tims_score)

Fixed

• Remove accidental print statement.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 49 lines in your changes are missing coverage. Please review.

Project coverage is 0.00%. Comparing base (10086b1) to head (f649b6c).

Files	Patch %	Lines
psm_utils/io/proteoscape.py	0.00%	43 Missing :warning:
psm_utils/io/_utils.py	0.00%	5 Missing :warning:
psm_utils/io/__init__.py	0.00%	1 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #75 +/- ## ===================================== Coverage 0.00% 0.00% ===================================== Files 25 25 Lines 2405 2415 +10 ===================================== - Misses 2405 2415 +10 ```

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