work on the branding of this repository

[12rambau]

At the moment this repository is called "sepal-ui" which is not really describing the purpose and/or the usage of the lib.

I think it would make sense to make a side step and find a name/logo that better fit the geo dashboarding offered by sepal_ui.

I'll publish some ideas soon, feedback is more than welcome ;-)

PS: The technical aspect of this change will be seen in issues