[Meta][Banner Plugin] Feature, bug fix and enhancement for Banner Plugin

[sidwang42]

This meta issue tracks the PR/Issues for banner plugin:

RFC #9861

Future Pull Requests Planed (in chronological order)

• Advanced settings for customizing the banner
• Banner extensibility model Refactor
• More Unit tests
• Cypress Integration test

Feature

• [Banner Plugin] Working static banner with no overlapping #9989
• [Banner Plugin] Add Api Support and Yaml config #10058

Enhancement

• [Banner Plugin] UI Implementation Refactor #10125
• [Banner Plugin] Support new page header #10139
• [Banner Plugin] Functional test coverage for banner plugin opensearch-dashboards-functional-test#1813
• [Banner Plugin] Banner extensibility model Refactor #10223

Bug