add gruvbox theme

lua/themes/gruvbox.lua

@@ -0,0 +1,33 @@
+local colors = {
+    white = "#c7b89d",
+    darker_black = "#1d2021",
+    black = "#222526", --  nvim bg
+    black2 = "#26292a",
+    one_bg = "#2a2e36", -- real bg of onedark
+    one_bg2 = "#31353d",
+    one_bg3 = "#343840",
+    grey = "#46494a",
+    grey_fg = "#5d6061",
+    grey_fg2 = "#5b5e5f",
+    light_grey = "#585b5c",
+    red = "#ec6b64",
+    baby_pink = "#ce8196",
+    pink = "#ff75a0",
+    line = "#2c2f30", -- for lines like vertsplit
+    green = "#89b482",
+    vibrant_green = "#a9b665",
+    nord_blue = "#7b9bbb",
+    blue = "#6d8dad",
+    yellow = "#d6b676",
+    sun = "#d1b171",
+    purple = "#b4bbc8",
+    dark_purple = "#cc7f94",
+    teal = "#749689",
+    orange = "#e78a4e",
+    cyan = "#82b3a8",
+    statusline_bg = "#252829",
+    lightbg = "#2d3139",
+    lightbg2 = "#262a32"
+}
+
+return colors