run shell linters

 use python lint template

project uses isoparse that was added in 2.7.0

 import_jsonrpc: enforce ISO format on date and datetime to avoid potential errors with unwanted format due to DB configuration

also changed it to be python3 compatible only

Also include missing script in setup

Also changed to have a single  image with all the scripts inside

 install with pip3 to ease reusing those methods in custom code,
 tag the image with installed scripts the latest version too