Improve auth support, add Q62 Series feature support

[civerachb-cpr]

Big update that adds a lot of new features:

• Improved authentication support (should be possible to use the driver without enabling anonymous users)
• Partial rewrite of HTTP GET/POST calls using requests
• Add support for IR/Night-vision mode available on the Q62 Series cameras
• Add support for the defogger available on the Q62 Series cameras
• Add support for the lens wiper available on the Q62 Series cameras
• Improved documentation (usage examples, summary of topics/services, supported cameras)

Still undergoing some testing, but I think this should be ready to merge soon.

[civerachb-cpr]

Tested on an additional M30 and P55 to make sure there weren't any unexpected regressions with the change to use requests + the new auth support.

Everything appears OK, so I'm going to release this now.