SHARE-124 implemented new GET request to retrieve all users

[bonbuo]

new GET request to get all users and added ranking_score to User Response

---

Your checklist for this pull request

Please review the contributing guidelines of this repository.

• Include the name and id of the Jira ticket in the PR’s title eg.: SHARE-666 The devils ticket
• Choose the proper base branch (develop)
• Confirm that the changes follow the project’s coding guidelines
• Verify that the changes generate no warnings and errors
• Verify to commit no other files than the intentionally changed ones
• Include reasonable and readable tests verifying the added or changed behavior
• Verify that all tests are passing, if not please state the test cases in the section below
• Perform a self-review of the changes
• Stick to the project’s git workflow (rebase and squash your commits)
• Verify that your changes do not have any conflicts with the base branch
• Put your ticket into the Code Review section in Jira
• Post a message in the #catroweb Slack channel and ask for a code reviewer

Additional Description

TODO: Add additional information that is not in your commit-message here

Tests - additional information

TODO: add additional information about testruns here