re-write whole plugin

added features to have local nvchad themes, override specific colors aka variables in nvchad themes

lua/hl_themes/gruvbox.lua

@@ -1,4 +1,6 @@
-local colors = {
+local M = {}
+
+M.base_30 = {
    white = "#ebdbb2",
    darker_black = "#232323",
    black = "#282828", --  nvim bg
@@ -32,4 +34,25 @@ local colors = {
    folder_bg = "#83a598",
 }
 
-return colors
+M.base_16 = {
+   base00 = "#282828",
+   base01 = "#3c3836",
+   base02 = "#504945",
+   base03 = "#665c54",
+   base04 = "#bdae93",
+   base05 = "#d5c4a1",
+   base06 = "#ebdbb2",
+   base07 = "#fbf1c7",
+   base08 = "#fb4934",
+   base09 = "#fe8019",
+   base0A = "#fabd2f",
+   base0B = "#b8bb26",
+   base0C = "#8ec07c",
+   base0D = "#83a598",
+   base0E = "#d3869b",
+   base0F = "#d65d0e",
+}
+
+M = require("base16").override_theme(M, "gruvbox")
+
+return M