Add Page size selector in issues list

What does this MR do and why?

This MR adds a page size selector at the bottom of the page in issues list which is remembered accross sessions , uses local storage. The available page sizes will be 20, 50 and 100.

Screenshots or screen recordings

Screen_Recording_2022-06-22_at_1.46.42_PM

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #364424 (closed)