impl: log when ssh config is done

SSH config manipulation is a heavy operation that involves disk writing and
can take long time. Logs are added so that we can easily identify when the ssh
configuration writing is done.

Author: fioan89

src/main/kotlin/com/coder/toolbox/cli/CoderCLIManager.kt

@@ -315,6 +315,7 @@ class CoderCLIManager(
     ) {
         context.logger.info("Configuring SSH config at ${context.settingsStore.sshConfigPath}")
         writeSSHConfig(modifySSHConfig(readSSHConfig(), wsWithAgents, feats))
+        context.logger.info("Finished configuring SSH config")
     }
 
     /**