nvim: add vim-sort-motion and vissort.vim

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

@@ -257,6 +257,16 @@ return require('packer').startup({function()
    -- }
 
    -- Conveniences
+   use { -- sort motion (gs)
+      'christoomey/vim-sort-motion',
+      config = function()
+         vim.cmd [[
+            "let g:sort_motion_flags = 'i'
+            let g:sort_motion_visual_block_command = 'Vissort'
+         ]]
+      end,
+      requires = 'navicore/vissort.vim', -- config requires
+   }
    use { -- Ghost: Web browser integration
       'raghur/vim-ghost',
       opt = true,
@@ -298,7 +308,8 @@ return require('packer').startup({function()
             -- map_c_h = true,
             -- map_c_w = true,
          })
-      end
+      end,
+      requires = 'hrsh7th/nvim-cmp', -- config requires
    }
    use { -- ts-autotag: automatically close html tags
       'windwp/nvim-ts-autotag',