Add missing `LOG_TRACE` calls
Streamline includes
Implement E-Stop functionality
The e-stop put system into safe state. This introduce a new event `EVENT_BUTTON_E_STOP_R`,
which is triggered when the e-stop is released. Also there is a new `motor_modes` enum literal
`MOTOR_RESUME` which remove the stop bit. `token_mgr` class has new member functions `reregister_e_stop()`,
`reregister_e_stop()` to re-register the `e_stop_listener` on dispatcher events.
Improve documentation of `token_mgr`