Do a script to migrate data from 4store to the Virtuoso or Algregraph Triple-store

[syphax-bouazzouni]

Context

See https://github.com/agroportal/project-management/issues/229

TODO

• [ ] Create a unified script to import or export data from 4store to Virtuoso or Algregraph (@syphax-bouazzouni)
• [ ] Create a documentation (@syphax-bouazzouni)
• [ ] Test it in Testportal (@syphax-bouazzouni )
• [ ] Test it in Stageportal (@syphax-bouazzouni )
• [ ] Do it in production for BioDivPortal and EcoPortal (@syphax-bouazzouni)
• [ ] Do it in production for AstroPortal (@imadbourouche )
• [ ] Do it in production for LovPortal (@muhammedBkf)
• [ ] Do it in production for AgroPortal (@syphax-bouazzouni)