[3/4] Refactor: init: Use async | Move theme stuff to theme.lua

third commit of refactor

perf improvements due to async

run packer sync if base16 not found

this is not perfect error handling for initial run, but something

handle require errors

init.lua

@@ -1,14 +1,28 @@
--- load all plugins
-require "pluginList"
+-- load all options
 require "options"
 
--- colorscheme related stuff
-vim.g.nvchad_theme = "onedark"
-local base16 = require "base16"
-base16(base16.themes["onedark"], true)
+-- only try to load stuff if atleast base16 is initialized
+-- TODO: Find a better way to trigger PackerSync
+if require "theme" then
+    local async
+    async =
+        vim.loop.new_async(
+        vim.schedule_wrap(
+            function()
+                require "pluginList"
+                require "plugins.bufferline"
+                require "highlights"
+                require "mappings"
+                require("utils").hideStuff()
 
-require "highlights"
-require "mappings"
-require "plugins.bufferline"
-
-require("utils").hideStuff()
+                async:close()
+            end
+        )
+    )
+    async:send()
+else
+    -- otherwise run packer sync
+    require "pluginList"
+    print("Now PackerSync will be executed, after completion, restart neovim.\n")
+    vim.cmd("PackerSync")
+end