chore(build): add pyproject.toml and externalize version

[ReenigneArcher]

Description

Introduce pyproject.toml for modern packaging and test configuration, moving dependencies and dev extras into the project metadata. Replace requirements.txt and requirements-dev.txt with editable installs (CI updated to pip install -e ".[dev]", README install instructions added). Externalize the package version into src/common/version.py and update src/common/common.py to use version; Dockerfile now writes the version file and installs the package (pip install .) instead of editing source or using requirements files. Overall cleanup to support setuptools/pyproject-based builds and simplified dependency management.

Screenshot

Issues Fixed or Closed

Roadmap Issues

Type of Change

• feat: New feature (non-breaking change which adds functionality)
• fix: Bug fix (non-breaking change which fixes an issue)
• docs: Documentation only changes
• style: Changes that do not affect the meaning of the code (white-space, formatting, missing semicolons, etc.)
• refactor: Code change that neither fixes a bug nor adds a feature
• perf: Code change that improves performance
• test: Adding missing tests or correcting existing tests
• build: Changes that affect the build system or external dependencies
• ci: Changes to CI configuration files and scripts
• chore: Other changes that don't modify src or test files
• revert: Reverts a previous commit
• BREAKING CHANGE: Introduces a breaking change (can be combined with any type above)

Checklist

• Code follows the style guidelines of this project
• Code has been self-reviewed
• Code has been commented, particularly in hard-to-understand areas
• Code docstring/documentation-blocks for new or existing methods/components have been added or updated
• Unit tests have been added or updated for any new or modified functionality

AI Usage

• None: No AI tools were used in creating this PR
• Light: AI provided minor assistance (formatting, simple suggestions)
• Moderate: AI helped with code generation or debugging specific parts
• Heavy: AI generated most or all of the code changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.01%. Comparing base (74105a1) to head (5c2069a).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #485      +/-   ##
==========================================
+ Coverage   59.96%   60.01%   +0.04%     
==========================================
  Files          24       25       +1     
  Lines        1806     1808       +2     
==========================================
+ Hits         1083     1085       +2     
  Misses        723      723              

Files with missing lines	Coverage Δ
src/common/common.py	93.10% <100.00%> (+0.24%)	⬆️
src/common/version.py	100.00% <100.00%> (ø)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud