[Imports] Thailand Land Use Import

[Nithinat Sangsitthi]

Hello

I was working on land use classification with a semi-automatic process done
by SCP in QGIS with Sentinel imagery. I thought it could be useful so I
uploaded it to OSM, but after discuss with community it should be
considered as import so I have to revert it then and before any upload.
My work is aim to make land use available in OSM in Thailand. Although it
is not that much precise, it could be better than leave the area empty.
However, this process may lead to some geometry problem, so I will upload
only large polygon (more than 10,000 square meters) to avoid small geometry
which may look weird.
To deal with error that may occur, I will fix all self-intersect of
geometry, duplicated of pre-mapped things, water features which overlap
with highway, etc. to make sure it would not affect any navigation.

The example of my work is around
https://www.openstreetmap.org/changeset/95728073 (small area and overlap
water haven't been fixed yet)

I haven't revert it yet because it could be useful to be an example. If it
could be accepted, I will create the wiki page, revert it and carefully
re-upload it via dedicated user.

Thank you very much in advance
Nithinat
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