Port query retry from Node, Java to Python

To harden queries, we can restart a stream with the last received document as the cursor

Node Implementation: https://github.com/googleapis/nodejs-firestore/pull/1116
Java Implementation: https://github.com/googleapis/java-firestore/pull/426