feat: open files without file:// protocol

[amustaque97]

Overview: add support for file paths starts with ../ ./ and /

To implement this I extended the existing regex variable in the src/config dir. In a few test cases, extra space is added intentionally to verify we don't include space in the URL as it looks & feels odd.

Here is the text file content used for testing

➜  ~ cat test.txt
https://google.com
file:///Users/ABC/oss/ghostty/build.zig
file:///Users/ABC/oss/ghostty/debug.sh


/Users/ABC/oss/ghostty/src/../debug.sh
../../Applications/Zed.app/Contents/Info.plist
[link](/home/user/ghostty.user/example) -- non-existent
[link](/Users/ABC/oss/ghostty/src/../debug.sh)
first time ../../Applications/Zed.app/Contents/Info.plist contributor
➜  ~

Here is the screen recording of the changes.

[mitchellh]

Well done. Thanks.

[varyform]

While it's a good improvement, there are some issues:
↳ app/views/albums/index.html.haml:1
will be recognized as /views/albums/index.html.haml:1

Which is neither a correct path nor a valid file protocol URL (b/c of line number)

I think these kind of things will behave much better once link configuration option is available.

Temp solution for my personal needs (Rails+Zed):
https://github.com/ghostty-org/ghostty/compare/main...varyform:ghostty:extra-protocols?expand=1

module CustomPathLogger
  private def from_rails_root(string)
    "zed://file#{string}"
  end
end

ActiveSupport.on_load(:action_view) do
  ActionView::LogSubscriber.prepend(CustomPathLogger)
end

[mitchellh]

While it's a good improvement, there are some issues:
↳ app/views/albums/index.html.haml:1
will be recognized as /views/albums/index.html.haml:1

Indeed, it's not a perfect solution but it's strictly an improvement. This is a well unit tested file, feel free to add additional test cases and resolve them. That'd be very helpful!