Add LunarVim

So far my experience with LunarVim has been positive. Although there are
some gotchas and your own configuration may be better in some cases, the
defaults used are pretty nice and should enable developers to get up and
going quickly with neovim.

lunarvim/.config/lvim/config.lua

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+-- General
+lvim.log.level = "warn"
+lvim.format_on_save = true
+lvim.colorscheme = "onedarker"
+lvim.transparent_window = true
+
+-- Keymappings
+lvim.leader = "space"
+lvim.keys.normal_mode["<C-s>"] = ":w<cr>"
+
+-- Plugins
+lvim.builtin.dashboard.active = true
+lvim.builtin.terminal.active = true
+lvim.builtin.nvimtree.setup.view.side = "left"
+lvim.builtin.nvimtree.show_icons.git = 0
+
+-- Parsers
+lvim.builtin.treesitter.ensure_installed = {
+  "bash",
+  "c",
+  "javascript",
+  "json",
+  "lua",
+  "python",
+  "typescript",
+  "css",
+  "rust",
+  "java",
+  "yaml",
+}
+
+lvim.builtin.treesitter.ignore_install = { "haskell" }
+lvim.builtin.treesitter.highlight.enabled = true

lunarvim/README.md

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+# LunarVim
+
+[LunarVim][LunarVim] is an IDE layer for neovim.
+
+## Use Cases
+
+LunarVim can be used to:
+
+- Have a sensible neovim config for working on real-world projects, with 0 configuration necessary
+
+You should not use LunarVim if:
+
+- You should use LunarVim.
+
+[LunarVim]: https://github.com/LunarVim/LunarVim