Add neovim config with kickstart-modular. Update shell configs.

config/nvim/lua/kickstart/plugins/tokyonight.lua

@@ -0,0 +1,24 @@
+return {
+  { -- You can easily change to a different colorscheme.
+    -- Change the name of the colorscheme plugin below, and then
+    -- change the command in the config to whatever the name of that colorscheme is.
+    --
+    -- If you want to see what colorschemes are already installed, you can use `:Telescope colorscheme`.
+    'folke/tokyonight.nvim',
+    priority = 1000, -- Make sure to load this before all the other start plugins.
+    config = function()
+      ---@diagnostic disable-next-line: missing-fields
+      require('tokyonight').setup {
+        styles = {
+          comments = { italic = false }, -- Disable italics in comments
+        },
+      }
+
+      -- Load the colorscheme here.
+      -- Like many other themes, this one has different styles, and you could load
+      -- any other, such as 'tokyonight-storm', 'tokyonight-moon', or 'tokyonight-day'.
+      vim.cmd.colorscheme 'tokyonight-night'
+    end,
+  },
+}
+-- vim: ts=2 sts=2 sw=2 et