feat(vatsal): Create new config vatsal

kickstart folder contains the original init.lua file. Current init.lua
gets it's config from lua.vatsal.plugins which what I created to
modularize the code and enable lazy loading.

Init to lua now loads all the plugins from vatsal.plugins

lua/vatsal/plugins/which-key.lua

@@ -0,0 +1,25 @@
+return {
+  -- Useful plugin to show you pending keybinds.
+  'folke/which-key.nvim',
+  opts = {},
+  event = 'VeryLazy',
+  config = function()
+    -- document existing key chains
+    require('which-key').register {
+      ['<leader>c'] = { name = '[C]ode', _ = 'which_key_ignore' },
+      ['<leader>d'] = { name = '[D]ocument', _ = 'which_key_ignore' },
+      ['<leader>g'] = { name = '[G]it', _ = 'which_key_ignore' },
+      ['<leader>h'] = { name = 'Git [H]unk', _ = 'which_key_ignore' },
+      ['<leader>r'] = { name = '[R]ename', _ = 'which_key_ignore' },
+      ['<leader>s'] = { name = '[S]earch', _ = 'which_key_ignore' },
+      ['<leader>t'] = { name = '[T]oggle', _ = 'which_key_ignore' },
+      ['<leader>w'] = { name = '[W]orkspace', _ = 'which_key_ignore' },
+    }
+    -- register which-key VISUAL mode
+    -- required for visual <leader>hs (hunk stage) to work
+    require('which-key').register({
+      ['<leader>'] = { name = 'VISUAL <leader>' },
+      ['<leader>h'] = { 'Git [H]unk' },
+    }, { mode = 'v' })
+  end
+}