♻️ refactor(rooticolor): move color utilities to module

Create a rooticolor module for color utilities that are used in multiple locations in config

lua/utils/rooticolor.lua

@@ -0,0 +1,37 @@
+local bit = require("bit")
+
+local M = {}
+
+-- Function to convert RGB to hexadecimal
+function M.rgb_to_hex(rgb)
+  return string.format("#%02x%02x%02x", rgb[1], rgb[2], rgb[3])
+end
+
+-- Function to get the foreground color of a highlight group
+function M.get_fg_color(hlgroup)
+  local hl = vim.api.nvim_get_hl(0, { name = hlgroup, link = false })
+  local fg = hl.fg
+  if fg then
+    return M.rgb_to_hex({
+      bit.rshift(bit.band(fg, 0xFF0000), 16),
+      bit.rshift(bit.band(fg, 0x00FF00), 8),
+      bit.band(fg, 0x0000FF),
+    })
+  end
+  return nil
+end
+
+function M.get_bg_color(hlgroup)
+  local hl = vim.api.nvim_get_hl(0, { name = hlgroup, link = false })
+  local bg = hl.bg
+  if bg then
+    return M.rgb_to_hex({
+      bit.rshift(bit.band(bg, 0xFF0000), 16),
+      bit.rshift(bit.band(bg, 0x00FF00), 8),
+      bit.band(bg, 0x0000FF),
+    })
+  end
+  return nil
+end
+
+return M