* Initial changes to validator client API
* Updated models
* GatewayRegistrationInfo constructor
* Change validator topology to convert into NymTopology without failure
* Mixnode registering and unregistering presence
* Directory -> Validator renamings + adjustments
* Updated upgrade command for mixnode
* Extracted metrics part of directory client into separate library
* Removed no longer needed traits
* Integrated new metrics client into mixnode
* Introduced the same set of changes to the gateway
* Getting active topology in client core via validator client
* Updated clients to get correct topology
* Introduced mix mining endpoints to validator client
* Network monitor using validator client
* Removed directory client
* Updated wasm client
* Temporarily disabled the test
* Checking ok status for validator client response
* Updated upgrade command for clients
* Allowing using old presence directory as new validator endpoint for mixnodes and gateways
* Fixed tests in non-default crates