Add sync tests for geo queries

[sync-by-unito]

This is just a placeholder for you to write tests that are subscribing to Geo-queries. I know you probably wrote local-realm tests for it, but now you can have a subscription on them, so wanted to file this to make sure you eventually add it to your corpus of sync tests

Sample tests in our repo: https://github.com/10gen/baas/blob/master/etc/sync/e2e/net/E2ETests/FlexibleSyncTests/GeoJSONTypeTest.cs