Added request body for the creation of stacks in API docs
Added request body for the creation of stacks in API docs

Signed-off-by: Thomas Cassaert <a1a29fb199bf3689de1b601afbc3cc72217d6e7d@inuits.eu>

juliushaertl/deck,juliushaertl/deck,juliushaertl/deck,nextcloud/deck,nextcloud/deck,nextcloud/deck