* add AvantePopupHint and AvanteInlineHint hl groups * Update lua/avante/sidebar.lua * chore: update styling Signed-off-by: Aaron Pham <contact@aarnphm.xyz> --------- Signed-off-by: Aaron Pham <contact@aarnphm.xyz> Co-authored-by: Aaron Pham <Aaronpham0103@gmail.com> Co-authored-by: Aaron Pham <contact@aarnphm.xyz>