Adding information about the data source at the scripts in catalogues/

[pkiraly]

for example

#!/usr/bin/env bash
# Bibliothèque nationale de France           <--- the name of the library
# https://www.bnf.fr                         <--- the website of the library

. ./setdir.sh

NAME=bnf
MARC_DIR=${BASE_INPUT_DIR}/bnf
TYPE_PARAMS="--emptyLargeCollectors --schemaType UNIMARC"
MASK=P174_*.UTF8

. ./common-script