feat(jupytext.lua): add jupytext plugin configuration to load jupytext.nvim and set lazy loading to false

lua/absolute/plugins/jupytext.lua

@@ -0,0 +1,7 @@
+return {
+    "GCBallesteros/jupytext.nvim",
+    config = function()
+        require("absolute.after.jupytext")
+    end,
+    lazy = false,
+}