Fish: Allow git-forgit in vendor_conf.d

[sandr01d]

Check list

• [X] I have performed a self-review of my code
• [X] I have commented my code in hard-to-understand areas
• [X] I have made corresponding changes to the documentation

Description

In the fish wrapper, assume forgit-git to be in vendor_conf.d/bin in case it can not be found in conf.d/bin. This fixes forgit not working with fish when located in /usr/share/fish/vendor_conf.d, as is the case with the forgit and forgit-git AUR packages. The location at conf.d is kept (and stays the default), so forgit does not break compatibility with fish plugin managers, such as fisher.

Closes #270

Type of change

• [X] Bug fix
• [ ] New feature
• [ ] Refactor
• [ ] Breaking change
• [ ] Documentation change

Test environment

• Shell
  • [ ] bash
  • [ ] zsh
  • [X] fish
• OS
  • [X] Linux
  • [ ] Mac OS X
  • [ ] Windows
  • [ ] Others:

[cjappl]

Seems harmless to me!