[TYPE 3] Filter Flows by Owner Email #1458

Summary

Add ability to filter flows by ownerEmail.

Request Type

Type 3: new functionality
Requests for totally new functionality will generally be passed to the relevant dev team, but we probably can't give any useful estimate of how or when it might be implemented. If it is a feature that is 'about' the API or programmable access, here might be the best place to suggest it, but generally feature requests will be more visible in the Tableau Community Ideas forum and should go there instead.

Description

A clear and concise description of what the feature request is. If you think that the value of this feature might not be obvious, include information like how often it is needed, amount of work saved, etc. If your feature request is related to a file or server in a specific state, describe the starting state when the feature can be used, and the end state after using it. If it involves modifying files, an example file may be helpful.

Flows currently can be filtered by ownerName, but that can be problematic if the name ends up containing a comma (see #907 for reference). Add support for filtering flows by ownerEmail like what workbooks, views, datasources, metrics, and projects have for symmetry and easy filtering.