Split tracking/error logging out into its own module

[Johannes-Andersen]

Describe the feature you'd like to request

Currently Sentry and Pulse SDK is pretty integrated into the code, with no plug-and play system We should allow folks to bring their own error/tracking scripts or ability to disable it entirely

Describe the solution you'd like

Create some sort of generic tracking/error handler in the JavaScript/python code Then have a config that folks can enable/disable different tracking modules (Pulse, Google Analytics, custom script injection, etc)