Change the "--selected-stations" option in the csv2obsoul command to
"--selected-stations-fpath". This is to make it more obvious that this
refers to a file path.

The old syntax using "--selected-stations" should still work though, as
argparse tries to match the options from passed abbreviations.

Caused by a reference to select_stations before the variable had been
defined.

Separate grid- and projection- related properties in Domain.

Lint with pylint, but keep the flake8 pylint plugin inactive for the
time being. Some more tunning is still needed.

With a somewhat basic config/plugin usage for flake8 at the moment.

Update .pre-commit-config.yaml and .gitlab-ci.yml to use these new
configs.

Via config.general.obsoul_export_params

default=["pressure", "temperature", "humidity", "sum_rain_1"]

In a format compatible with the one used in the input data.

Move thinning_grid_coarse_factor config option from the
"commands.select" config section to the "domain" section.

Also, change scheme to choose resolution of shown grids (if any).

In which case the support grid is the same as the regular grid.

Post-clustering thinning is now only deactivated when
config.commands.select.thinning_grid_coarse_factor <= 0 (instead of
"<=1" as before).

And make other minor cosmetic changes to them.

Redundant with functionality provided by the "show" command, as "select"
already saves files that can be read later by "show". Leave these options
only to "cluster" command now.

Add config option "thinning_grid_coarse_factor" to "select" command,
with a default of 4.

Trim accepted obs to a coarse grid similar to the grid defined in the
config's domain, but with a gsize increased by a factor of 4.

At each (i, j) point of the coarse grid, pick only one station: the one
for which the rejection rate is the lowest among all stations belonging
to (i, j).

And fix legend of "'show' --domain" command fig, as well as some unit
tests.

To print all configs in use (including defaults) in TOML format.

To show the domain that the code is using.

Output files are now created inside different dirs for each netatmoqc
command. This helps organising files.

The config opt "outdir" points to where the directories described above
should be created. The default "outdir" is Path("."), wherever "." is.

Just as an aid for coloring some log output, since we're using this now
in more than one place. Remove some "CYAN" and "RESET_COLOUR"
definitions in commands_functions.py and file_formats.py.