Initial version of ethos export

Context

Initial version of the ethos_u_export

Enable export from aidge to ethos-u and to simulate the result with the ARM FVP.

Preliminary version. Some improvments are need to simplify applicative code installation and compilation

Modified files

All files are new

Detailed major modifications

TODO

(List the changes that need to be done to track the progress of the MR, you need to update the list when committing !)

• NOT DONE
• DONE
• TO DO