feat(git): add :Git clean command

bundle/git.vim/lua/git/command/clean.lua

@@ -0,0 +1,26 @@
+local M = {}
+
+local job = require('spacevim.api.job')
+local nt = require('spacevim.api.notify')
+local log = require('git.log')
+
+local function on_exit(id, code, single)
+  log.debug('git-clean exit code:' .. code .. ' single:' .. single)
+  if code == 0 and single == 0 then
+    nt.notify('git clean successfully')
+  else
+    nt.notify('failed to run git clean', 'WarningMsg')
+  end
+end
+
+function M.run(argv)
+  local cmd = {'git', 'clean'}
+  for _, v in ipairs(argv) do table.insert(cmd, v)
+  end
+  log.debug('git-clean cmd:' .. vim.inspect(cmd))
+  job.start(cmd, {
+    on_exit = on_exit
+  })
+end
+
+return M