[IMP] energy_project: reseller model

Trello Card

Will merge this to an implementation branch with !203 (merged)

Changelog

• [IMP] energy_project: new model reseller
• [IMP] energy_project: on load reseller from import assignate xml_id parsing from order field.
• [IMP] energy_project: added data for reseller on load (last update 13/09/2023 source)
• [IMP] energy_project: access from res.config.setting to reseller
• [IMP] energy_project: unit testing for xml_id
• [IMP] energy_seflconsumption: added field reseller_id

Roadmap will do in implementation branch

• I18N (cat, es, eu and eng)