plugins: add keymap for the command history picker

- Adds a keymap (<leader>ch) for the command history picker of
  telescope.
- Removes the kickstart big comment on top of the init.lua file.

Co-Authored-by: iGor milhit <igor@milhit.ch>

init.lua

@@ -1,41 +1,3 @@
---[[
-
-=====================================================================
-==================== READ THIS BEFORE CONTINUING ====================
-=====================================================================
-
-Kickstart.nvim is *not* a distribution.
-
-Kickstart.nvim is a template for your own configuration.
-  The goal is that you can read every line of code, top-to-bottom, understand
-  what your configuration is doing, and modify it to suit your needs.
-
-  Once you've done that, you should start exploring, configuring and tinkering to
-  explore Neovim!
-
-  If you don't know anything about Lua, I recommend taking some time to read through
-  a guide. One possible example:
-  - https://learnxinyminutes.com/docs/lua/
-
-  And then you can explore or search through `:help lua-guide`
-
-
-Kickstart Guide:
-
-I have left several `:help X` comments throughout the init.lua
-You should run that command and read that help section for more information.
-
-In addition, I have some `NOTE:` items throughout the file.
-These are for you, the reader to help understand what is happening. Feel free to delete
-them once you know what you're doing, but they should serve as a guide for when you
-are first encountering a few different constructs in your nvim config.
-
-I hope you enjoy your Neovim journey,
-- TJ
-
-P.S. You can delete this when you're done too. It's your config now :)
---]]
-
 -- Set <space> as the leader key
 -- See `:help mapleader`
 --  NOTE: Must happen before plugins are required (otherwise wrong leader will be used)
@@ -330,6 +292,11 @@ require('telescope').setup {
       },
     },
   },
+  pickers = {
+    command_history = {
+      theme = "dropdown",
+    }
+  }
 }
 
 -- Enable telescope fzf native, if installed
@@ -357,6 +324,7 @@ vim.keymap.set('n', '<leader>sw', require('telescope.builtin').grep_string, { de
 vim.keymap.set('n', '<leader>sg', require('telescope.builtin').live_grep, { desc = '[S]earch by [G]rep' })
 vim.keymap.set('n', '<leader>sd', require('telescope.builtin').diagnostics, { desc = '[S]earch [D]iagnostics' })
 vim.keymap.set('n', '<leader>sb', require('telescope.builtin').buffers, { desc = '[S]earch [B]uffers' })
+vim.keymap.set('n', '<leader>ch', require('telescope.builtin').command_history, { desc = '[C]command [H]istory' })
 vim.keymap.set('n', '<leader>ss', require'telescope'.extensions.luasnip.luasnip , { desc = '[S]earch [S]nippets' })
 
 -- [[ Configure Treesitter ]]