feat(colorscheme): add zenbones colorscheme (#1676)

* Added Zeonbones colorscheme

* Apply suggestion from @Uzaaft

* Apply suggestion from @Uzaaft

* refactor(zenbones): Dont use compat mode

---------

Co-authored-by: Uzair Aftab <[email protected]>
Co-authored-by: Uzair Aftab <[email protected]>

Author: menisadi

lua/astrocommunity/colorscheme/zenbones/README.md

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+# Zenbones
+
+🪨 A collection of contrast-based Vim/Neovim colorschemes
+
+**Repository:** <https://github.com/zenbones-theme/zenbones.nvim>

lua/astrocommunity/colorscheme/zenbones/init.lua

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+return {
+  "zenbones-theme/zenbones.nvim",
+  dependencies = "rktjmp/lush.nvim",
+  lazy = false,
+}