Add sample data in downloads page

[tapaswenipathak]

• [ ] Link to the generic data available for users https://abibuilder.informatik.uni-tuebingen.de/archive/openms/Tutorials/Data/.
• [ ] Describe available examples specific data:
  • https://github.com/OpenMS/OpenMS/tree/develop/share/OpenMS/examples
  • https://github.com/OpenMS/OpenMS/tree/develop/doc/code_examples/data
  • https://github.com/OpenMS/pyopenms-docs/tree/master/src/data
  • https://github.com/OpenMS/pyopenms-docs/tree/master/src/examples/data

[BhaswatiRoy]

Hello @tapaswenipathak The 1st link for the "generic data available for users" is showing not found If the issue is still open for work could you please send the new link here?