[ADPRODUCTS-370] Documentation updates with CS data revamp

[skahmann3]

Creating Sponsored Tiles dataset documentation in DTMO. Also adding the new datatables to the docs.

[skahmann3]

@rebecca-burwei - created documentation for Tiles, noting the new datasets. Please review when you get a chance! Though I'll hold off on merging until we know where the new tables are landing in Looker

[skahmann3]

Thanks for catching those edits, @badboy. Will you re-review? But please don't merge changes yet, we're waiting for another BQ table to land before finalizing these updates

[skahmann3]

@rebecca-burwei -- added the Suggest tables to the docs and finalized the new Tiles ones, will you re-review? Also, anything else to add? If not, I think we can wrap up the docs ask from ADPRODUCTS-367