Use media publisher name and favicon in site banner

[NejcZdovc]

Description

We need to show media publisher name and favicon in site banner circle if publisher don't provide custom image. We should do the same for regular sites regarding favicon. We need to pass name and favicon into webui. If publisher is media we should pass publisher name, if regular site we should pass in domain as name.

Steps to Reproduce

1. enable rewards
2. go to https://www.youtube.com/channel/UCFNTTISby1c_H-rm5Ww5rZg
3. click on bat logo and click donate

Actual result:

Expected result:

Reproduces how often:

Brave version (brave://version info)

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds?

Website problems only:

• Does the issue resolve itself when disabling Brave Shields?
• Is the issue reproducible on the latest version of Chrome?

Additional Information

[mandar-brave]

Requesting uplift to 0.57 Beta.

[kjozwiak]

Requesting uplift to 0.57 Beta.

Thanks @mandar-brave, just a heads up for the future, uplift labels should be used on the PR's associated with the issue and not the issue itself.

[LaurenWags]

@NejcZdovc it's expected that we don't add 'on YouTube' on the site banner, correct? Just wondering as we do have this 'on YouTube' text on the panel and brave://rewards page (see below).

Here's the site banner for comparison:

[LaurenWags]

Per discussion with @NejcZdovc logged #2238 for the missing 'on YouTube' text on site banner.

[LaurenWags]

Verified passed with

Brave	0.57.7 Chromium: 71.0.3578.53 (Official Build) beta(64-bit)
Revision	599fb72e740eab9d10609f1ed28a2ad669f82c1a-refs/branch-heads/3578@{#669}
OS	Mac OS X

• Verified test plan from Fixes site banner formatting for media publisher brave-core#800

Verification Passed on

Brave	0.57.7 Chromium: 71.0.3578.53 (Official Build) beta (64-bit)
Revision	599fb72e740eab9d10609f1ed28a2ad669f82c1a-refs/branch-heads/3578@{#669}
OS	Windows

• Verified test plan from Fixes site banner formatting for media publisher brave-core#800

Verification passed on

Brave	0.57.7 Chromium: 71.0.3578.53 (Official Build) beta (64-bit)
Revision	599fb72e740eab9d10609f1ed28a2ad669f82c1a-refs/branch-heads/3578@{#669}
OS	Linux