feat(indent): add chunk highlight like hlchunk with snacks.nvim (#1413)

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

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

* chore(indent): move snacks-highlight-chunk to indent category

* Update lua/astrocommunity/indent/snacks-highlight-chunk/init.lua

---------

Co-authored-by: radiol <[email protected]>
Co-authored-by: Micah Halter <[email protected]>

Author: 3 people

lua/astrocommunity/indent/snacks-indent-hlchunk/README.md

@@ -0,0 +1,5 @@
+# snacks-indent-hlchunk
+
+A recipe to replicate `hlchunk.nvim`-style indent chunk highlighting using [ folke/snacks.nvim ](https://github.com/folke/snacks.nvim).
+
+This setup enables visual chunk borders with rounded corners and lines (╭─╰│), providing a lightweight alternative to [ shellRaining/hlchunk.nvim ](https://github.com/shellRaining/hlchunk.nvim).

lua/astrocommunity/indent/snacks-indent-hlchunk/init.lua

@@ -0,0 +1,18 @@
+return {
+  "folke/snacks.nvim",
+  opts = {
+    indent = {
+      enabled = true,
+      chunk = {
+        enabled = true,
+        char = {
+          corner_top = "╭",
+          corner_bottom = "╰",
+          horizontal = "─",
+          vertical = "│",
+          arrow = ">",
+        },
+      },
+    },
+  },
+}