Make Leaflet-Geoman ignore created layers by default

[riccardoporreca]

Fixes #1215, see discussion therein.

The possible usage of pm_ignore=False is now also included in the in 'Geoman Draw Control' documentation page (with some minor adjustments to existing content)

[riccardoporreca]

Let me know if and how I should add an entry in CHANGELOG.md

[riccardoporreca]

The docs failure is unrelated to the changes, see https://app.readthedocs.org/projects/ipyleaflet/builds/25076525/#238126839--263

The geopandas.dataset has been deprecated and was removed in GeoPandas 1.0. You can get the original 'naturalearth_lowres' data from https://www.naturalearthdata.com/downloads/110m-cultural-vectors/.

I could build the docs locally commenting out the corresponding example, to verify how the updated Geoman Draw Control page looks.

[iisakkirotko]

The change was even simpler than I thought, no comments there. I tried it out and everything seems to work as expected.

There seem to be some commits that are unrelated to the PR, but I'll let @martinRenou be the judges of whether that is acceptable

[iisakkirotko]

These two lines in seem unrelated to the commit they are in.

[riccardoporreca]

You are right, these two minor changes came when I rendered the fix to the list locally, since my IDE drops trailing spaces and there was a warning in Sphinx about the nr of = that I took the chance of fixing.

I should probably have at least added an additional line in the commit message stating stg like "Also fix some minor cosmetic RST formatting."

If you prefer to have a more accurate commit history, I am happy to force-push them as individual changes. Let me know, no big deal for me.

[riccardoporreca]

@iisakkirotko, @martinRenou, any plan to go back to this?

Meanwhile, I am happy to share the interim solution we have been adopting while waiting for this to be part of a new release of ipyleaflet, in case it is helpful to others.

import ipyleaflet
from ipyleaflet import Bool


class GeomanIgnored(ipyleaflet.Layer):
    pm_ignore = Bool(True).tag(sync=True, o=True)


class PolygonGeomanIgnored(ipyleaflet.Polygon, GeomanIgnored):
    pass


class CircleGeomanIgnored(ipyleaflet.Circle, GeomanIgnored):
    pass


class MarkerGeomanIgnored(ipyleaflet.Marker, GeomanIgnored):
    pass


...

[iisakkirotko]

Hi @riccardoporreca! Other than the comment I already left, the PR looks good to me. @martinRenou if that doesn't bother you, as far as I'm concerned, feel free to merge.

[martinRenou]

LGTM!