feat(#118): merge pom.xml files into profile

[h1alexbel]

In this pull, I've implemented merging all pom.xml files into single profile in maven step. The following columns were added: projects, plugins, pwars, pjars, ppoms.

closes #118
History:

• feat(maven.py:36-39: Parse 'build' JSON array of maven... #118): test case
• feat(maven.py:36-39: Parse 'build' JSON array of maven... #118): merge
• feat(maven.py:36-39: Parse 'build' JSON array of maven... #118): nightly only
• feat(maven.py:36-39: Parse 'build' JSON array of maven... #118): jar is default
• feat(maven.py:36-39: Parse 'build' JSON array of maven... #118): puzzles, pretty XML

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PR-Codex overview

This PR introduces enhancements to the maven.py script for better handling and merging of Maven project data, updates the CI workflow, and improves testing functionalities. It includes changes to variable handling, XML parsing, and adds new test cases.

Detailed summary

• Added extend-ignore-identifiers-re in _typos.toml.
• Updated CI workflow in .github/workflows/nightly.yml to remove "deep" from command.
• Introduced XML parsing with xml.etree.ElementTree in sr_data/src/sr_data/steps/maven.py.
• Enhanced main function to handle Maven project profiles.
• Updated pom function to return merged project data.
• Added merge function to consolidate Maven project information.
• Introduced new test case for merging projects in sr-data/src/tests/test_maven.py.

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