Add DEP005 to detect dependencies that are in the standard library

[fpgmaas]

Checklist

• A description of the changes is added to the description of this PR.
• If there is a related issue, make sure it is linked to this PR.
• If you've fixed a bug or added code that should be tested, add tests!
• If you've added or modified a feature, documentation in docs is updated

Description

This PR proposes to fix #760 by adding a DEP005 to deptry that detects dependencies that are already in the standard library. Running this on this example project results in the following:

Scanning 1 file...

pyproject.toml: DEP002 'pathlib' defined as a dependency but not used in the codebase
pyproject.toml: DEP005 'asyncio' is defined as a dependency but it is included in the Python standard library.
pyproject.toml: DEP005 'pathlib' is defined as a dependency but it is included in the Python standard library.
Found 3 dependency issues.

For more information, see the documentation: https://deptry.com/

Limitations

For situations where a package is first avaialble on PyPI and then added to the standard library with the same name, it could happen that yusers add the following to their configuration:

dependencies = [
    "foo; python_version < '3.X'", 
]

In this case, deptry will incorrectly flag this as a DEP005 issue. However, I believe this issue is negligible because only a limited number of packages have been added to the standard library in recent versions, and the related packages on PyPI typically do not have the same name as their standard library counterparts (e.g., for zoneinfo, the PyPI package is named backports.zoneinfo), and this will not raise an error with deptry. If this becomes an issue in the future we can try to improve this behavior by checking the conditions of the dependencies.

[codecov]

Codecov Report

Attention: Patch coverage is 89.36170% with 5 lines in your changes missing coverage. Please review.

Project coverage is 93.0%. Comparing base (5d07b7d) to head (700047d).

Files	Patch %	Lines
...n/deptry/violations/dep004_misplaced_dev/finder.py	33.3%	1 Missing and 1 partial ⚠️
python/deptry/core.py	50.0%	1 Missing ⚠️
...eptry/violations/dep005_standard_library/finder.py	95.4%	0 Missing and 1 partial ⚠️
...ry/violations/dep005_standard_library/violation.py	90.9%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #761     +/-   ##
=======================================
- Coverage   93.0%   93.0%   -0.1%     
=======================================
  Files         35      37      +2     
  Lines        920     961     +41     
  Branches     165     173      +8     
=======================================
+ Hits         856     894     +38     
- Misses        50      51      +1     
- Partials      14      16      +2     

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