feat(indent): add chunk highlight like hlchunk with snacks.nvim

[radiol]

Add a recipe that simulates hlchunk.nvim's chunk visualization using snacks.nvim.

📑 Description

This recipe adds snacks.nvim configuration to replicate shellRaining/hlchunk.nvim -like indent chunk visualization.

ℹ Additional Information

Screenshot

[github-actions]

Review Checklist

Does this PR follow the [Contribution Guidelines](development guidelines)? Following is a partial checklist:

Proper conventional commit scoping:

• If you are adding a new plugin, the scope would be the name of the category it is being added into. ex. feat(utility): added noice.nvim plugin

• If you are modifying a pre-existing plugin or pack, the scope would be the name of the plugin folder. ex. fix(noice-nvim): fix LSP handler error

• Pull request title has the appropriate conventional commit type and scope where the scope is the name of the pre-existing directory in the project as described above

• README is properly formatted and uses fenced in links with <url> unless they are inside a [title](url)

• Entry returns a single plugin spec with the new plugin as the only top level spec (not applicable for recipes or packs).

• Proper usage of opts table rather than setting things up with the config function.

• Proper usage of specs table for all specs that are not dependencies of a given plugin (not applicable for recipes or packs).

[radiol]

Moved the recipe to the indent category instead of recipes.

[mehalter]

I think it might be better to call it snacks-indent-hlchunk, and I do agree it should go in indent rather than recipes. Also left a comment

[mehalter]

Applied suggestions and this looks great! Thanks so much!