Teasi map: Mauritania (africa/mauritania, OpenStreetMap of 20261008/20261009)

Copy every *.v* file into BikeNav/Map/Countries/ on the device.
Confirm the USB connection on the display first, or the volume stays
unreadable.  BikeNav/packages.xml only matters when this replaces one of
the original maps (Denmark, Germany, Norway, Sweden): their entries still
name the old files, and the device warns at startup until they point at
the new ones -- `teasi info <file>` prints the size and md5 to put in.

The device loads one file per layer and country and keeps the one with
the newest date, so delete an older map of Mauritania before copying, or
it may be ignored.  It also only loads countries that are licensed for
it -- country code 262 here.

Built from https://download.geofabrik.de/africa/mauritania-latest.osm.pbf with
https://github.com/kabel2/osm2teasi -- map data (c) OpenStreetMap
contributors, ODbL 1.0, elevation from Copernicus DEM GLO-90.

Mauritania_osmarea.v20261008  1783355 bytes  md5 cd4ff443f54a6f24d65f1e4bb418ae4c
Mauritania_osmpoint.v20261008  34664 bytes  md5 7511ac22d283b71315a4a0b339fe6c22
Mauritania_osmpoi.v20261008  364643 bytes  md5 b41d5af044169dabb104185dc84886b0
Mauritania_osm.v20261008  10756156 bytes  md5 5d68e171227971ce7bb31abcc284f52b
Mauritania_ta.v20261009  1326295 bytes  md5 4abfc02178e6ea9f79328036dd0a9737
Mauritania_terrain.v20261008  42689330 bytes  md5 b5856274a4ae02ae22b41eafe4b54d08
