feat(mkdir): add lua mkdir plugin

lua/spacevim/plugin/mkdir.lua

@@ -0,0 +1,36 @@
+--=============================================================================
+-- mkdir.lua --- mkdir plugin in lua
+-- Copyright (c) 2016-2019 Wang Shidong & Contributors
+-- Author: Wang Shidong < wsdjeg@outlook.com >
+-- URL: https://spacevim.org
+-- License: GPLv3
+--=============================================================================
+
+local M = {}
+
+local sp = require('spacevim')
+local logger = require('spacevim.logger').derive('mkdir')
+
+local function mkdir(dir)
+    if sp.fn.exists('*mkdir') == 1 then
+        sp.fn.mkdir(dir, 'p')
+    else
+    end
+end
+
+local function create_directory(dir)
+    local d = dir
+    if d ~= '^[a-z]\\+:/' then
+        return
+    end
+    if sp.fn.isdirectory(d) == 0 then
+        mkdir(d)
+    end
+end
+
+function M.create_current()
+    local directory = sp.fn.fnamemodify(sp.fn.expand('<afile>'), ':p:h')
+    create_directory(directory)
+end
+
+return M