feat(cli): add docgen cmd for mkdocs pages

docs/cli/ensure-workspaces.md

@@ -0,0 +1,19 @@
+# ensure-workspaces
+
+```
+Create at least this many workspaces for the specified monitor
+
+Usage: ensure-workspaces <MONITOR> <WORKSPACE_COUNT>
+
+Arguments:
+  <MONITOR>
+          Monitor index (zero-indexed)
+
+  <WORKSPACE_COUNT>
+          Number of desired workspaces
+
+Options:
+  -h, --help
+          Print help
+
+```