Add warning when `@list` is used with no paging information

[timotheeguerin]

We do give an error if there is no @pageItems describing where the paging items are but not if there is no paging information at all like this playground

We should probably validate it has at least one of the following

• a @nextLink (@prevLink, @firstLink and @lastLink all feel optional additions)
• a @pageIndex
• a @continuationToken