Run `nix fmt` at the root of the repository to format all files. I've
done this on my fork and this will help me merge your changes later
without having to deal with un-formatted files.
Updated Lualine with mode icon, moved git diff and added a icon
displaying Github copilot status.
Changed setting to default yank to system clipboard
Updated startup dashboard
Added Markdown Preview and the Obsidian plugins.
Updated the Startup screen with links to Github Copilot and Obsidian
Moved the helm-vim plugin from a seperate file into the lsp.nix file.
