Improved metadata structure, verification and legacy support

Summary

Several updates have been implemented, including improvements to metadata file combination, TSDF handling, testing, and documentation. Additionally, there are enhancements to documentation generation, content, and the introduction of a validator script. Legacy import support has been added as well.

What's Changed

• Post publication editions by @PabRod in #11
• Added Pypi badge and re-order authors by @vedran-kasalica in #12
• Improved algorithm for combining metadata files by @vedran-kasalica in #13
• Enhancements for TSDF Handling, Testing, and Documentation Refactoring - [ pre-random access] by @vedran-kasalica in #19
• Improve docs generation and content by @PabRod in #20
• Improve existing documentation and introduce tsdf mandatory/optional fields by @vedran-kasalica in #21
• Support legacy import by @vedran-kasalica in #22
• Add validator script by @kretep in #23

Full Changelog: v0.2.0...v0.4.0