Refactor contents to be compatible with GNU Stow

.config/nvim/lua/plugins/theme.lua

@@ -0,0 +1,15 @@
+return {
+  "projekt0n/github-nvim-theme",
+  name = "github-theme",
+  lazy = false,   -- make sure we load this during startup if it is your main colorscheme
+  priority = 1000, -- make sure to load this before all the other start plugins
+  config = function()
+    require("github-theme").setup({
+      options = {
+        transparent = true,
+      },
+    })
+    vim.cmd("colorscheme github_dark_default")
+    vim.api.nvim_set_hl(0, "NormalFloat", { bg = "#0d1117" })
+  end,
+}