feat(cli/ssh): implement wait options and deprecate no-wait (#7894)

Fixes #7768
Refs #7893

cli/testdata/coder_ssh_--help.golden

@@ -25,15 +25,18 @@ Start a shell into a workspace
           Enable diagnostic logging to file.
 
       --no-wait bool, $CODER_SSH_NO_WAIT
-          Specifies whether to wait for a workspace to become ready before
-          logging in (only applicable when the startup script behavior is
-          blocking). Note that the workspace agent may still be in the process
-          of executing the startup script and the workspace may be in an
-          incomplete state.
-
+          Enter workspace immediately after the agent has connected. This is the
+          default if the template has configured the agent startup script
+          behavior as non-blocking.
+ DEPRECATED 
       --stdio bool, $CODER_SSH_STDIO
           Specifies whether to emit SSH output over stdin/stdout.
 
+      --wait yes|no|auto, $CODER_SSH_WAIT (default: auto)
+          Specifies whether or not to wait for the startup script to finish
+          executing. Auto means that the agent startup script behavior
+          configured in the workspace template is used.
+
       --workspace-poll-interval duration, $CODER_WORKSPACE_POLL_INTERVAL (default: 1m)
           Specifies how often to poll for workspace automated shutdown.