Extend linter rules (#1300)

- dupword checks for duplicate words in the source code
- durationcheck checks for two durations multiplied together
- forbidigo forbids identifiers
- mirror reports wrong mirror patterns of bytes/strings usage
- misspell finds commonly misspelled English words in comments
- predeclared finds code that shadows one of Go's predeclared identifiers
- thelper detects Go test helpers without t.Helper() call and checks the consistency of test helpers

client/internal/engine.go

@@ -640,7 +640,7 @@ func (e *Engine) updateNetworkMap(networkMap *mgmProto.NetworkMap) error {
 				if config.GetSshConfig() != nil && config.GetSshConfig().GetSshPubKey() != nil {
 					err := e.sshServer.AddAuthorizedKey(config.WgPubKey, string(config.GetSshConfig().GetSshPubKey()))
 					if err != nil {
-						log.Warnf("failed adding authroized key to SSH DefaultServer %v", err)
+						log.Warnf("failed adding authorized key to SSH DefaultServer %v", err)
 					}
 				}
 			}