Feature/pgrouting procedures

related #7 (closed) closes #6 (closed)

core

• add pgrouting-procedures as git submodule (for now using fix/remove_duplicate branch)
• add _add_pgrouting_procedures method to use script of pgrouting-procedures
• update parameter.json to add needed variables vitesse_voiture / sens / urbain

docker

• add psql installation in dockerfile
• add git submodule init in dockerfile

test

• add tests/dev/docker-compose.dev.yml for postgis and pgrouting docker image use
• add .sql dumps for pivot database initialization (for now, should be replaced by IGN storage)
• create template parameters.json to indicate databases host / port (for pivot and pgr)
• add pytest fixture to initialize pivot database

docs

• update documentation with correct repository name
• update documentation for psql and submodule update