Added user avatar tooltip

[thomheymann]

Resolves #137276

Summary

Adds the following shared components

• UserToolTip - Renders a tooltip with user information
• UserAvatarTip - Renders a user avatar with tooltip

Screenshot

Usage

import { UserToolTip, UserAvatarTip } from '@kbn/user-profile-components';

<UserToolTip user={userProfile.user} avatar={userProfile.data.avatar}>
  <!-- An inline element to trigger the tooltip -->
</UserToolTip>

<UserAvatarTip user={userProfile.user} avatar={userProfile.data.avatar} />

[elasticmachine]

Pinging @elastic/kibana-security (Team:Security)

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 841f9e2

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
cases	496	498	+2
security	461	463	+2
total			+4

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
@kbn/user-profile-components	3	5	+2

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
cases	371.0KB	371.0KB	+24.0B

Unknown metric groups

API count

id	before	after	diff
@kbn/user-profile-components	48	55	+7

History

• 💛 Build #76757 was flaky 89203b0
• 💛 Build #76679 was flaky 0eb2934

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[kc13greiner]

LGTM!