feat(cli): Add restart subcommand (#5799)

Fixes #2464

cli/testdata/coder_--help.golden

@@ -37,6 +37,7 @@ Workspace Commands:
   delete         Delete a workspace
   list           List workspaces
   rename         Rename a workspace
+  restart        Restart a workspace
   schedule       Schedule automated start and stop times for workspaces
   show           Display details of a workspace's resources and agents
   speedtest      Run upload and download tests from your machine to a workspace

cli/testdata/coder_restart_--help.golden

@@ -0,0 +1,25 @@
+Restart a workspace
+
+Usage:
+  coder restart <workspace> [flags]
+
+Flags:
+  -h, --help   help for restart
+  -y, --yes    Bypass prompts
+
+Global Flags:
+      --global-config coder   Path to the global coder config directory.
+                              Consumes $CODER_CONFIG_DIR (default "/tmp/coder-cli-test-config")
+      --header stringArray    HTTP headers added to all requests. Provide as "Key=Value".
+                              Consumes $CODER_HEADER
+      --no-feature-warning    Suppress warnings about unlicensed features.
+                              Consumes $CODER_NO_FEATURE_WARNING
+      --no-version-warning    Suppress warning when client and server versions do not match.
+                              Consumes $CODER_NO_VERSION_WARNING
+      --token string          Specify an authentication token. For security reasons setting
+                              CODER_SESSION_TOKEN is preferred.
+                              Consumes $CODER_SESSION_TOKEN
+      --url string            URL to a deployment.
+                              Consumes $CODER_URL
+  -v, --verbose               Enable verbose output.
+                              Consumes $CODER_VERBOSE