perf(cli): optimize CPU consumption of help pages (#9607)

This change reduces the CPU consumption of --help by ~50%.

Also, this change removes ANSI escape codes from our golden files. I
don't think those were worth the inability to parallelize golden file tests and
global state fragility.

cli/testdata/coder_ssh_--help.golden

@@ -1,47 +1,47 @@
 coder v0.0.0-devel
 
-USAGE:
+USAGE:
   coder ssh [flags] <workspace>
 
   Start a shell into a workspace
 
-OPTIONS:
-  -A, --forward-agent bool, $CODER_SSH_FORWARD_AGENT
+OPTIONS:
+  -A, --forward-agent bool, $CODER_SSH_FORWARD_AGENT
           Specifies whether to forward the SSH agent specified in
           $SSH_AUTH_SOCK.
 
-  -G, --forward-gpg bool, $CODER_SSH_FORWARD_GPG
+  -G, --forward-gpg bool, $CODER_SSH_FORWARD_GPG
           Specifies whether to forward the GPG agent. Unsupported on Windows
           workspaces, but supports all clients. Requires gnupg (gpg, gpgconf) on
           both the client and workspace. The GPG agent must already be running
           locally and will not be started for you. If a GPG agent is already
           running in the workspace, it will be attempted to be killed.
 
-      --identity-agent string, $CODER_SSH_IDENTITY_AGENT
+      --identity-agent string, $CODER_SSH_IDENTITY_AGENT
           Specifies which identity agent to use (overrides $SSH_AUTH_SOCK),
           forward agent must also be enabled.
 
-  -l, --log-dir string, $CODER_SSH_LOG_DIR
+  -l, --log-dir string, $CODER_SSH_LOG_DIR
           Specify the directory containing SSH diagnostic log files.
 
-      --no-wait bool, $CODER_SSH_NO_WAIT
+      --no-wait bool, $CODER_SSH_NO_WAIT
           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: Use --wait instead.
 
-  -R, --remote-forward string, $CODER_SSH_REMOTE_FORWARD
+  -R, --remote-forward string, $CODER_SSH_REMOTE_FORWARD
           Enable remote port forwarding (remote_port:local_address:local_port).
 
-      --stdio bool, $CODER_SSH_STDIO
+      --stdio bool, $CODER_SSH_STDIO
           Specifies whether to emit SSH output over stdin/stdout.
 
-      --wait yes|no|auto, $CODER_SSH_WAIT (default: auto)
+      --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)
+      --workspace-poll-interval duration, $CODER_WORKSPACE_POLL_INTERVAL (default: 1m)
           Specifies how often to poll for workspace automated shutdown.
 
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