[chains] Adding code to generate chain_stores repo TSV files from OSM

scripts/geodata/chains/chains.sh

@@ -0,0 +1,23 @@
+if [ "$#" -ge 1 ]; then
+    DATA_DIR=$1
+else
+    DATA_DIR=$(pwd)
+fi
+
+PWD=$(pwd)
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+python $SCRIPT_DIR/chains_tsv.py $DATA_DIR/planet-venues.osm $DATA_DIR/chains.tsv
+
+cd $DATA_DIR
+split -d -C524200 chains.tsv chains.split.
+
+for filename in chains.split.*; do 
+    extension="${filename##*.0}"
+    name="${filename%%.*}"
+    echo -e "name_lower\tname\tcanonical\tknown_chain\tcount" | cat - $filename > /tmp/out
+    mv /tmp/out $name.$extension.tsv
+    rm $filename
+done
+
+cd $PWD