nvim: add which-key

Even I'm not perfect

.config/nvim/lua/blake/plugins.lua

@@ -175,7 +175,7 @@ return require('packer').startup({function()
          })
       end
    }
-   use { -- refactoring:               Refactoring for neovim
+   use { -- refactoring:               Refactoring tools for neovim
       'ThePrimeagen/refactoring.nvim',
       requires = {
          {"nvim-lua/plenary.nvim"},
@@ -410,6 +410,12 @@ return require('packer').startup({function()
    use { -- splitjoin:                 switch between single line and multiline versions of code - gJ and gS
       'AndrewRadev/splitjoin.vim',
    }
+   use { -- which-key:                 remind me what that one keybind does again?
+      'folke/which-key.nvim',
+      config = function()
+         require("which-key").setup()
+      end,
+   }
    use { -- rhysd: clever-split:       split calculation based on pane dimensions - CS or CleverSplit
       'rhysd/clever-split.vim',
       config = function()