add submgr intersphinx and docs

Signed-off-by: weichen <niweichen@chinamobile.com>
Change-Id: If8ea779c2c49869fd5d5c3746bf7b3ac9597df4a
3 files changed
tree: 89a6723af60d7bb5b32c7bb1b82f647ef9ba72fe
  1. doc-templates/
  2. docs/
  3. .gitignore
  4. .gitreview
  5. .readthedocs.yaml
  6. tox.ini