Bunch of updates to NVIM setup for Windows

Updated Settings
* Added new keymaps in keys.lua
* improved LSP setup

Plugins Removed
* codellama
* hardtime

Additional Plugins added
* Added edgy
* Added neo-tree
* Added todo-comments
* Added which-key

lua/barink/plugins/neo-tree.lua

@@ -0,0 +1,9 @@
+return {
+    "nvim-neo-tree/neo-tree.nvim",
+    branch = "v3.x",
+    dependencies = {
+        "nvim-lua/plenary.nvim",
+        "nvim-tree/nvim-web-devicons",
+        "MunifTanjim/nui.nvim"
+    },
+}