tor/changes/bug40222

  o Major features (metrics):
    - Introduce a new class of extra-info statistics that allows relays to
      expose details of how overloaded they are. This information is controlled
      using the OverloadStatistics torrc option, and it will be used to make
      more informed decisions about the network's load balancing. Implements
      proposal 328; closes ticket 40222.
Implement backbone of overload statistics. - Implement overload statistics structure. - Implement function that keeps track of overload statistics. - Implement function that writes overload statistics to descriptor. - Unittest for the whole logic. 2021-03-09 14:36:40 +01:00			`o Major features (metrics):`
			`- Introduce a new class of extra-info statistics that allows relays to`
			`expose details of how overloaded they are. This information is controlled`
			`using the OverloadStatistics torrc option, and it will be used to make`
			`more informed decisions about the network's load balancing. Implements`
			`proposal 328; closes ticket 40222.`