Implement configuration schema for cookie_content_blocker_oembed field formatter

Problem/Motivation

The cookie_content_blocker_oembed Field Formatter Plugin does not have a configuration schema.

Steps to reproduce

1. Install modules: config_inspector, cookie_content_blocker_media
2. Configure 'Cookie Content Blocker - oEmbed content' field formatter for oEmbed content at /admin/structure/media/manage/remote_video/display
3. Notice the configuration schema error at admin/reports/config-inspector/core.entity_view_display.media.remote_video.default/list

Proposed resolution

Implement a configuration schema for cookie_content_blocker_oembed field formatter.

Remaining tasks

1. Write a patch
2. Review
3. Commit

User interface changes

None.

API changes

None.

Data model changes

None.