refactor(utils): flatten the dir of files

lua/gopher/_utils/runner.lua

@@ -0,0 +1,39 @@
+local c = require "gopher.config"
+local runner = {}
+
+---@class gopher.RunnerOpts
+---@field cwd? string
+---@field timeout? number
+---@field stdin? boolean|string|string[]
+---@field text? boolean
+
+---@param cmd (string|number)[]
+---@param on_exit fun(out:vim.SystemCompleted)
+---@param opts? gopher.RunnerOpts
+---@return vim.SystemObj
+function runner.async(cmd, on_exit, opts)
+  opts = opts or {}
+  return vim.system(cmd, {
+    cwd = opts.cwd or nil,
+    timeout = opts.timeout or c.timeout,
+    stdin = opts.stdin or nil,
+    text = opts.text or true,
+  }, on_exit)
+end
+
+---@param cmd (string|number)[]
+---@param opts? gopher.RunnerOpts
+---@return vim.SystemCompleted
+function runner.sync(cmd, opts)
+  opts = opts or {}
+  return vim
+    .system(cmd, {
+      cwd = opts.cwd or nil,
+      timeout = opts.timeout or c.timeout,
+      stdin = opts.stdin or nil,
+      text = opts.text or true,
+    })
+    :wait()
+end
+
+return runner