Add query rewriter and other improvements (rename question to query in eval dataset, minor changes to prompts & inputs)

[alsavelv]

Description

Please include a summary of the change or issue fix.

Type of change

Please remove options that are not relevant.

• [] New feature: not breaking, new functionality
• [] New feature: may cause existing code to not work as expected
• [] Bug fix
• [] Needs documentation update

Test and checks

Please describe how you've tested your file

• [] tested via a notebook
• [] tested via a testflow
• [] only made sure the code is written correctly Checks
• [] commented code for complex areas
• [] updated readme with the new changes
• [] changes not generating errors with the main flows in rag-vectorsearchtype directories (e.g rag-cosmos-mongo)
• [] I have tested my implementation
• [] I have updated environment.yaml file with any additional dependancies

[journeyman-msft]

I went ahead and ran the three samples in promptflow with the queryrewriter and they work, however, I tried running it in interactive mode with a follow up question "What organization were we talking about?" and i would get various failures in all three: 1) queryparser 2) chatflow 3) try to retrieve new index. Is this a question we want to have handled?

This question works however for all 3.