update colorscheme

lua/setup/gruvbox.lua

@@ -1,6 +1,14 @@
-vim.g.gruvbox_material_diagnostic_text_highlight = 1
-vim.g.gruvbox_material_diagnostic_virtual_text = 'colored'
-vim.g.gruvbox_bold = 0
-vim.g.gruvbox_italicize_comments = 0
-vim.g.gruvbox_italicize_strings = 0
+require('gruvbox').setup({
+  undercurl = true,
+  underline = true,
+  bold = true,
+  italic = true, -- will make italic comments and special strings
+  inverse = true, -- invert background for search, diffs, statuslines and errors
+  invert_selection = false,
+  invert_signs = false,
+  invert_tabline = false,
+  invert_intend_guides = false,
+  contrast = "hard", -- can be "hard" or "soft"
+  overrides = {},
+})
 vim.cmd('colorscheme gruvbox')