Restructure config | Move some to a packer plugin | Lot of cleanup

* move teleacope files, updater and related utils to
  https://github.com/NvChad/core

* restructure config file and directory structure

* expose mappings for better escape

* allow multiple mappings for some

* improve merge table function for the same

* move autocommands to a seperate file

* rearrange everything alphabetically where sanely possible

* rearrange packer plugin list on the basis of trigerred state

config structure now

 .
├──  init.lua
├──  LICENSE
├──  lua
│  ├──  chadrc.lua
│  ├──  colors
│  │  ├──  highlights.lua
│  │  ├──  init.lua
│  │  └──  themes
│  │     ├──  chadracula.lua
│  │     ├──  everforest.lua
│  │     ├──  gruvchad.lua
│  │     ├──  javacafe.lua
│  │     ├──  mountain.lua
│  │     ├──  norchad.lua
│  │     ├──  one-light.lua
│  │     ├──  onedark.lua
│  │     ├──  tokyonight.lua
│  │     └──  tomorrow-night.lua
│  ├──  core
│  │  ├──  autocmds.lua
│  │  ├──  init.lua
│  │  ├──  mappings.lua
│  │  ├──  options.lua
│  │  └──  utils.lua
│  ├──  default_config.lua
│  └──  plugins
│     ├──  configs
│     │  ├──  autopairs.lua
│     │  ├──  autosave.lua
│     │  ├──  bufferline.lua
│     │  ├──  chadsheet.lua
│     │  ├──  compe.lua
│     │  ├──  dashboard.lua
│     │  ├──  gitsigns.lua
│     │  ├──  icons.lua
│     │  ├──  lspconfig.lua
│     │  ├──  luasnip.lua
│     │  ├──  nvimtree.lua
│     │  ├──  others.lua
│     │  ├──  statusline.lua
│     │  ├──  telescope.lua
│     │  ├──  treesitter.lua
│     │  └──  zenmode.lua
│     ├──  init.lua
│     └──  packerInit.lua
└──  README.md

lua/plugins/configs/nvimtree.lua

@@ -0,0 +1,96 @@
+local present, tree_c = pcall(require, "nvim-tree.config")
+if not present then
+   return
+end
+
+local tree_cb = tree_c.nvim_tree_callback
+local g = vim.g
+
+vim.o.termguicolors = true
+
+g.nvim_tree_add_trailing = 0 -- append a trailing slash to folder names
+g.nvim_tree_allow_resize = 1
+g.nvim_tree_auto_close = 0 -- closes tree when it's the last window
+g.nvim_tree_auto_ignore_ft = { "dashboard" } -- don't open tree on specific fiypes.
+g.nvim_tree_auto_open = 0
+g.nvim_tree_disable_netrw = 1
+g.nvim_tree_follow = 1
+g.nvim_tree_git_hl = 1
+g.nvim_tree_gitignore = 1
+g.nvim_tree_hide_dotfiles = 1
+g.nvim_tree_highlight_opened_files = 0
+g.nvim_tree_hijack_netrw = 0
+g.nvim_tree_indent_markers = 1
+g.nvim_tree_ignore = { ".git", "node_modules", ".cache" }
+g.nvim_tree_quit_on_open = 0 -- closes tree when file's opened
+g.nvim_tree_root_folder_modifier = table.concat { ":t:gs?$?/..", string.rep(" ", 1000), "?:gs?^??" }
+g.nvim_tree_side = "left"
+g.nvim_tree_tab_open = 0
+g.nvim_tree_update_cwd = 1
+g.nvim_tree_width = 25
+
+g.nvim_tree_show_icons = {
+   folders = 1,
+   -- folder_arrows= 1
+   files = 1,
+   git = 1,
+}
+
+g.nvim_tree_icons = {
+   default = "",
+   symlink = "",
+   git = {
+      deleted = "",
+      ignored = "◌",
+      renamed = "➜",
+      staged = "✓",
+      unmerged = "",
+      unstaged = "✗",
+      untracked = "★",
+   },
+   folder = {
+      -- disable indent_markers option to get arrows working or if you want both arrows and indent then just add the arrow icons in front            ofthe default and opened folders below!
+      -- arrow_open = "",
+      -- arrow_closed = "",
+      default = "",
+      empty = "", -- 
+      empty_open = "",
+      open = "",
+      symlink = "",
+      symlink_open = "",
+   },
+}
+
+g.nvim_tree_bindings = {
+   { key = { "<CR>", "o", "<2-LeftMouse>" }, cb = tree_cb "edit" },
+   { key = { "<2-RightMouse>", "<C-]>" }, cb = tree_cb "cd" },
+   { key = "<C-v>", cb = tree_cb "vsplit" },
+   { key = "<C-x>", cb = tree_cb "split" },
+   { key = "<C-t>", cb = tree_cb "tabnew" },
+   { key = "<", cb = tree_cb "prev_sibling" },
+   { key = ">", cb = tree_cb "next_sibling" },
+   { key = "P", cb = tree_cb "parent_node" },
+   { key = "<BS>", cb = tree_cb "close_node" },
+   { key = "<S-CR>", cb = tree_cb "close_node" },
+   { key = "<Tab>", cb = tree_cb "preview" },
+   { key = "K", cb = tree_cb "first_sibling" },
+   { key = "J", cb = tree_cb "last_sibling" },
+   { key = "I", cb = tree_cb "toggle_ignored" },
+   { key = "H", cb = tree_cb "toggle_dotfiles" },
+   { key = "R", cb = tree_cb "refresh" },
+   { key = "a", cb = tree_cb "create" },
+   { key = "d", cb = tree_cb "remove" },
+   { key = "r", cb = tree_cb "rename" },
+   { key = "<C->", cb = tree_cb "full_rename" },
+   { key = "x", cb = tree_cb "cut" },
+   { key = "c", cb = tree_cb "copy" },
+   { key = "p", cb = tree_cb "paste" },
+   { key = "y", cb = tree_cb "copy_name" },
+   { key = "Y", cb = tree_cb "copy_path" },
+   { key = "gy", cb = tree_cb "copy_absolute_path" },
+   { key = "[c", cb = tree_cb "prev_git_item" },
+   { key = "}c", cb = tree_cb "next_git_item" },
+   { key = "-", cb = tree_cb "dir_up" },
+   { key = "q", cb = tree_cb "close" },
+   { key = "g?", cb = tree_cb "toggle_help" },
+}