vim-patch:9.1.0686: zip-plugin has problems with special characters (#30108)

Problem:  zip-plugin has problems with special characters
          (user202729)
Solution: escape '*?[\' on Unix and handle those chars
          a bit differently on MS-Windows, add a test, check
          before overwriting files

runtime(zip): small fixes for zip plugin

This does the following:
- verify the unzip plugin is executable when loading the autoload plugin
- handle extracting file names with '[*?\' in its name correctly by
  escaping those characters for the unzip command (and handle those
  characters a bit differently on MS-Windows, since the quoting is different)
- verify, that the extract plugin is not overwriting a file (could cause
  a hang, because unzip asking for confirmation)
- add a test zip file which contains those special file names

fixes: vim/vim#15505
closes: vim/vim#15519

https://github.com/vim/vim/commit/7790ea0c680a9f951a86066e5940ec16b2333c9a

Co-authored-by: Christian Brabandt <cb@256bit.org>

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