Disable trackers in commands that don't need them

[paracycle]

Motivation

Related to: #1181

Most of our commands don't need the overhead of Tapioca runtime trackers constantly running in the background and doing processing. This PR implements and makes use of a mechanism to disable all trackers for commands that don't need them.

Implementation

1. Add a Tracker module that is responsible for registration and disabling of an individual tracker module.
2. Make all trackers use that Tracker module and respect the enabled? state.
3. Add a CommandWithoutTracker base class that disables all trackers during initialization.
4. Make all commands that don't need trackers (basically all commands except GemCommand) subclass from CommandWithoutTracker.

Tests

No added tests.