Implement Popover common component

Description

None

QA Test Steps

Validate that all appearances of Popover in the webapp are consistent (no UI changes)

Reporter

None

Status

Mana

None

Assignee

Eli Yukelzon

QA Assignee

Lindy Isherwood

Reporter

Eli Yukelzon

Fix versions

Mattermost Team

Platform

Sprint

None

Labels

None

QA Testing Areas

Other (write in QA test steps)

GitHub Issue

None

Components

None
Configure