fix(cli): add commands.yml.mako

It was previously hidden thanks to .gitignore.

Good I made a fresh clone to see if make really really works.

src/mako/cli/docs/commands.yml.mako

@@ -0,0 +1,16 @@
+<%namespace name="util" file="../../lib/util.mako"/>\
+<%
+    from util import (hash_comment, new_context)
+    from cli import (subcommand_md_filename, SPLIT_START, SPLIT_END)
+
+    c = new_context(schemas, resources, context.get('methods'))
+%>\
+% for resource in sorted(c.rta_map.keys()):
+% for method in sorted(c.rta_map[resource]):
+${SPLIT_START} ${subcommand_md_filename(resource, method)}
+${resource.upper()} DOCS
+
+${method.upper()}
+${SPLIT_END}
+% endfor # each method
+% endfor # each resource