fix: vim-protocol work under Windows with vital lib update

[tsuyoshicho]

Problem

vim-protocol do not work under Windows.
(system curl work fine? but msys2/git for windows curl do not work)

Solution

Library update and that library include vim-jp/vital.vim#773

Web.HTTP curl/wget client outputFile did not care Path separator. This PR was fixed it same as internal tempfile handling.

related changes

• module load method replaced, to be use vital#vim_protocol#new() instead of vital#of('vim_protocol')
• Vim.Process replaced to Process
• Guard.store arguments change String to List[String]

---

Tests result

• Git for Windows curl http/zip/zipped file
• Windows bundle curl http (thanks @hokorobi san)

[hokorobi]

I just loaded the URL with :e and it worked the same as before the change.
(In the case of the OS bundled curl, it seems to work fine originally.)

Windows 10, OS bundled curl, gVim 8.2.3482

[tsuyoshicho]

ping @lambdalisue san

[lambdalisue]

👍