{Cocoapods} Automatically find snapshot targets. (#6799)
{Cocoapods} Automatically find snapshot targets. (#6799)

Instead of having to update snapshot targets manually, the podspec could
search for components with a "tests/snapshot" subdirectory and use that
to generate subspecs.

material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios