Extend `getresults` grpc

[oxarbitrage]

In https://github.com/ZcashFoundation/zebra/issues/8163 we implemented the getresults api where we can get all the transactions we have for given viewing keys.

We want to extent that so we can query transactions from the given height to the tip or all transactions in a range of heights.

[oxarbitrage]

Blocked until https://github.com/ZcashFoundation/zebra/issues/8163 is done.