Adding new plugin and redirect_map to manage redirections for each page

RCS Knowledge Hub is now live with updated docs, hence the current docs.cloud needs to redirect users to the new site. Following changes are added to this merge request

• Integrating mkdocs-redirects(https://github.com/mkdocs/mkdocs-redirects?tab=readme-ov-file) (requirements.txt)
• Redirection map added to the mkdoc.yml