Redis only - scan and map records based on a max num

[synle]

This is iffy, not sure if it's a good idea to support and if it is, should it be done as a map for table vs columns?

Sample PR code

The code for this is ready here, but will not merge until we can find a better UX. https://github.com/synle/sqlui-native/pull/331/files

Sample code used to scan the iterator

for await (const key of client.scanIterator(iteratorParams)) {
        res.push({
          name: key,
          columns: [],
        })

        if(res.length === 15){
          // top it off at max records
          break;
        }
      }

[synle]

There can be many records inside of Redis. So it's not a good idea to scan it all just to infer the schema.