Generate shapes.txt and other features and fixes

[Heath123]

• Generate shapes.txt
• Use the National Operator Code as the main ID
• Fix issue with quotes in stop names
• Handle multiple routes defined in one service
• Include headsign in stop_times.txt
• Don't include street name and city in stop name
• Fix an issue when wait time was on the From rather than the To part of the link
• Other fixes that I forgot the purpose for

[Heath123]

I've noticed this so maybe I should fix that first

[linusnorton]

Hey @Heath123 thanks for your PR. I'm not actively maintaining this repo anyway (just critical vulnerabilities) and I don't have a way to test this out. If you are happy with it then I will accept the change but please make it's well tested

[linusnorton]

@Heath123 did you still want to merge this?