[Feature] Support for Python 3

[r4wk]

Is your feature request related to a problem? Please describe. Yes, can't use the latest version of OctoPrint with Obico as it requires Python 3

Describe the solution you'd like Add Python 3 support

Describe alternatives you've considered n/a

Additional context n/a

[kennethjiang]

Obico does support python 3. Did you run into any problems related to python 3 compatibility?

[r4wk]

You're right, user error. Sorry about that.