[FIX] Chart: Update geojson data

Update geojson data following Europe geodata.
See https://ec.europa.eu/eurostat/web/gisco/geodata/administrative-units/countries

closes #8143

Task: 5224009
X-original-commit: f541294
Signed-off-by: Adrien Minne (adrm) <adrm@odoo.com>
Signed-off-by: Rémi Rahir (rar) <rar@odoo.com>

Author: rrahir

demo/geo_json/HOWTO.md

@@ -0,0 +1,27 @@
+## How to regenate the topo json data
+
+1. Find a source of geoJSON data (for instance https://www.naturalearthdata.com/downloads/110m-cultural-vectors/) that covers the whole earth
+2. convert it as topoJSON files (for instance https://jeffpaine.github.io/geojson-topojson/)
+3. split the topoJSON file by regions. Example:
+
+   ```bash
+    # CROP world topojson to region:
+
+    # requires mapshaper CLI https://github.com/mbloch/mapshaper
+
+    # use `mapshaper -clip` with a specifing bounding box to delimitate continent or geographic regions, see https://github.com/mbloch/mapshaper/wiki/Command-Reference#-clip
+
+    # europe:
+    mapshaper world.topo.json -clip bbox=-25,30,38,75 -o europe.topo.json
+    #Asia:
+    mapshaper world.topo.json -clip bbox=17,-10,170,80 -o asia.topo.json
+    #Oceania:
+    mapshaper world.topo.json -clip bbox=100,-50,230,0 -o oceania.topo.json
+    # Africa:
+    mapshaper world.topo.json -clip bbox=-25,-40,60,40 -o africa.topo.json
+    # North America:
+    mapshaper world.topo.json -clip bbox=-180,5,-10,120 -o na.json
+    mapshaper na.json -filter '!["RU", "MR", "GW", "SN", "ML", "LR", "GN", "SL", "EH", "MA", "IS", "VE", "CO", "GY", "GM"].includes(this.properties.FID)' -o north_america.topo.json
+    # South America:
+    mapshaper world.topo.json -clip bbox=-150,-120,-30,12 -o south_america.topo.json
+   ```