Different precisions to output of spatial data types

[schroedtert]

libfmt offers the possibility to pass the desired precision of the output to the formatter for the spatial data types.
https://fmt.dev/latest/api.html#formatting-user-defined-types

This would enable to a better controllable output, example:

fmt::format("{:.4f}", Coordiante{0.1, 0.1, Level{1}}); // "COORDINATE(0.1000, 0.1000) -- LEVEL 1"
fmt::format("{:.1f}", Coordiante{0.1, 0.1, Level{1}}); // "COORDINATE(0.1, 0.1) -- LEVEL 1"

ToDo:

• add formatting option to formatter
• add unit tests on cpp side
• change the precision for __str__ and __repr__ in the pybinds