[New Feature]: Read .csv Datasets

[thomasarsouze]

Describe your feature request

Only netcdf files can be read. We need to add a csv reader file.

Describe the solution you'd like

We must not change the defDatabase function, but depending on the extension of filename, we must define a parallel way to get all the variables from the .csv file. This means first use a read_csv then retrive all columns from the dataset.

As .csv is less constrained than netcdf, this also means some hypothesis on the format of the header for example.

Describe alternatives you've considered

No response

Additional context

No response