ac9bead0dc
This adds a test utility that simplifies testing entity cards and content extensions in the new frontend system. The utility creates a test page that provides EntityProvider context and accepts entity extensions through input redirects. Also adds the `apis` option to `renderTestApp` for API overrides, and includes tests for entity cards in catalog, org, and api-docs plugins. Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>