feat(todo-comments.lua): add support for todo-comments plugin

This commit adds support for the todo-comments plugin. It includes the following changes:

- Added a new file `todo-comments.lua` in the `lua/absolute/after` directory.
- Imported the `todo-comments` module.
- Set up the `todo-comments` plugin with default options.
- Defined key mappings for jumping to previous and next todo comments.
- Defined key mappings for opening comments in Telescope and Trouble.
- Added a new file `todo-comments.lua` in the `lua/absolute/plugins` directory.
- Exported a table with the configuration for the `todo-comments` plugin, including its dependencies and a config function that requires the `absolute.after.todo-comments` module.

lua/absolute/plugins/todo-comments.lua

@@ -0,0 +1,7 @@
+return {
+    "folke/todo-comments.nvim",
+    dependencies = { "nvim-lua/plenary.nvim" },
+    config = function()
+        require("absolute.after.todo-comments")
+    end,
+}