[web] introduce build info to users settings list

Summary:
This diff introduces the build info setting to the user settings list + all the relevant logic needed to make this happen

Linear task: https://linear.app/comm/issue/ENG-834/build-info-page

Test Plan:
Please see the screenshot below

Reviewers: atul, inka

Reviewed By: atul

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D10824