EOL v2.0 contribution for v6

This branch is the contribution of IFPEN dev for v6.0

Test in progress

• EOLIENNE_FAST
• EOLIENNE/ADNR/01-1WT
• EOLIENNE/ADNR/02-1WT_and_Nest
• EOLIENNE/ADNR/03-2WT_Pre_and_Nest
• EOLIENNE/ADR/01_1WT_opti
• EOLIENNE/ALM/01_1WT_low_res
• EOLIENNE/ALM/02_1WT_high_res
• EOLIENNE/ALM/03_2WT_and_Nest

A few questions about the merge is done in comments