Support for a modern editing and render extended mark down like github and mermaid chart

[alef75]

I would like to request a modern Markdown editor and renderer for Eclipse IDE that provides GitHub-style rendering and supports Mermaid diagrams.

Markdown has become the de facto standard for software project documentation. It is widely used for README files, design documents, and technical notes that are committed together with the source code in the repository.

While Eclipse currently provides limited Markdown support through editors such as WikiText, these tools only handle basic Markdown syntax and lack modern features such as:

GitHub-flavored Markdown rendering (tables, task lists, code highlighting, etc.)

Mermaid diagram rendering for flowcharts, sequence diagrams, Gantt charts, and more

Live preview synchronized with the editor

Other IDEs such as Visual Studio Code and JetBrains IDEs already provide rich Markdown experiences with diagram rendering, making documentation more readable and maintainable directly inside the development environment.

Adding a fully featured Markdown editor and previewer to Eclipse would significantly improve the developer experience and make Eclipse more attractive for teams that manage documentation alongside code.