feats: nvim, emacs, shell

* nvim: Add copilot completions
* nvim: grug-far buffer won't show lualine & winbar now
* nvim: remove obsidian.nvim
* nvim: luasnip now works
* emacs: more keymaps in org-mode
* emacs: start customizing leader keys
* shell: Add more ls aliases
* shell: Add apt alias in fish

tools/nvim/lua/plugins/completion.lua

@@ -1,8 +1,24 @@
 return {
   { import = "plugins.mod.nvim-cmp" },
+  {
+    "saadparwaiz1/cmp_luasnip"
+  },
   {
     "L3MON4D3/LuaSnip",
+    build = "make install_jsregexp",
+    config = function()
+      require("luasnip.loaders.from_vscode").load_standalone(
+        {
+          path = "~/.config/zed/snippets/c.json" }
+      )
+    end,
+    -- TODO: Remove this, simply delete this will let nvim-cmp not work
     dependencies = { "rafamadriz/friendly-snippets" },
   },
-  { "rafamadriz/friendly-snippets" },
+  {
+    "zbirenbaum/copilot-cmp",
+    config = function()
+      require("copilot_cmp").setup()
+    end,
+  },
 }