Stability improvements and integration with Android Perfetto

New features:

• Introduces run_stopping_condition option in config. Makes it possible to stop the current run when a specific event is triggered with 3 supported events:
  (1) A regex in the logcat is matched.
  (2) The reception of an HTTP POST request by the locally started webserver.
  (3) A direct call to the stop() method on the Experiment instance.
• The Perfetto Plugin which integrates Perfetto into Android Runner.
• Introduces the usb_handler option in the config to disable the USB connection during each run when using for example a Raspberry PI as a host machine.
• Allows user to set the device's logcat buffer size through the AR config using the logcat_buffer_size option.

Fixes:

• Solves Trepn errors when using ADB over WiFi.
• Improves Monsoon stability.
• Fixes logcat_regex issue when scripts are used.