python codemeta.json enhancement

[mustafasoylu]

enhance metadata in codemeta.json by harvesting data from pyproject.toml and poetry.lock

also mentioned in #95

[mustafasoylu]

I think we can enrich our codemeta.json output with below items. I checked codemeta project page and codemetapy for these.

• [ ] data from pyproject.toml
  • [ ] pypi classifiers
  • [ ] programmingLanguage -> classifiers['Programming Language'] else 'python'
  • [ ] applicationCategory -> classifiers['Topic']
  • [ ] operatingSystem -> classifiers['Operating System']
  • [ ] developmentStatus -> classifiers['Development Status']
  • [ ] audience -> classifiers['Intended Audience']
  • [x] pyproject.toml dependencies: softwareRequirements
  • [x] readme: need to enable Url in somesy data model and add it to codemeta.json if it is an url
• [x] direct mappings
  • [x] identifier = name
  • [x] runtimePlatform = "Python 3"
• [x] from somesy.toml
  • [x] person: roleName, startDate, endDate