* placeholder handling of wg registration with upgrade mode token
* include upgrade mode credentials as part of credential storage
* introduce helper for decoding JWT payload
* expose methods for removing emergency credentials from the storage
* don't allow duplicate emergency credentials with the same content
* added authenticator ClientMessage for upgrade mode check
* retrieve credentials with longest expiration first
* post rebasing fixes
* fixed gateway config
* feat: allow specifying minimum node performance for client init
* nym-node UM improvements
* fixed upgrade mode bandwidth on initial authentication
* fix: logs and thresholds
* expose attestation information from nym-node http api
* additional logs
* post rebasing fixes
* make @simonwicky happy by removing empty lines in emergency_credential table definition
* chore: remove '_' prefix for internal counters within in-mem ecash storage
* improved import of 'UpgradeModeState' within the nym-node
* use explicit time dependency within credential-storage
* re-order imports within the gateway-client
* moved 'AvailableBandwidth' definition to the monorepo
- new instance of echo server with lib / cli split
- echo server docs update
- tcpproxy and echosever now listen for kill signal
- ffi bindings of tcpproxy functions updated
* add TcpProxyClient and TcpProxyServer abstractions to SDK
* add single connection example
* add multi-connection example
* add simple echo server to `tools/`: used for multi-connection example
* update FFI toml files: switched to local imports
* add proxy bindings to `ffi/shared`
* add proxy bindings and example to `ffi/go`
* add note to `ffi/cpp` about lack of Proxy bindings for the moment
Jędrzej Stuczyński