feat(cli): add docgen cmd for mkdocs pages

docs/cli/named-workspace-layout-rule.md

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+# named-workspace-layout-rule
+
+```
+Add a dynamic layout rule for the specified workspace
+
+Usage: named-workspace-layout-rule <WORKSPACE> <AT_CONTAINER_COUNT> <LAYOUT>
+
+Arguments:
+  <WORKSPACE>
+          Target workspace name
+
+  <AT_CONTAINER_COUNT>
+          The number of window containers on-screen required to trigger this layout rule
+
+  <LAYOUT>
+          [possible values: bsp, columns, rows, vertical-stack, horizontal-stack, ultrawide-vertical-stack]
+
+Options:
+  -h, --help
+          Print help
+
+```