Add emoji support and enhance documentation in RAS

- Added pymdownx.emoji extension to mkdocs.yml for emoji rendering.
- Updated index.md to include a new dashboard image and revised descriptions for clarity.
- Expanded the features section with detailed descriptions of tools and testing capabilities.
- Introduced a roadmap section outlining completed, in-progress, and to-do features for better project visibility.

docs/mkdocs.yml

@@ -81,6 +81,9 @@ markdown_extensions:
   - pymdownx.snippets
   - pymdownx.tabbed:
       alternate_style: true
+  - pymdownx.emoji:
+      emoji_index: !!python/name:material.extensions.emoji.twemoji
+      emoji_generator: !!python/name:material.extensions.emoji.to_svg
   - tables
   - attr_list
   - md_in_html