Git binary

[honnip]

Closes #67

[honnip]

bot, build

[flathubbot]

Queued test build for com.gitbutler.gitbutler.

[flathubbot]

Started test build 150803

[flathubbot]

Build 150803 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/133895/com.gitbutler.gitbutler.flatpakref

[honnip]

2024-10-01T01:59:04.434263Z  INFO crates/gitbutler-tauri/src/main.rs:64: system git executable for fetch/push: "git"
2024-10-01T01:59:12.604496Z ERROR git_test_fetch: crates/gitbutler-tauri/src/commands.rs:35: error=Error(backend error: failed to execute git command: No such file or directory (os error 2)

[📦 com.gitbutler.gitbutler ~]$ echo $PATH
/app/bin:/usr/bin
[📦 com.gitbutler.gitbutler ~]$ which git
/app/bin/git

https://github.com/gitbutlerapp/gitbutler/blob/3742349a2217210b8f69abe8cf3a5e9da7f09227/crates/gitbutler-git/src/executor/tokio/mod.rs#L32
https://github.com/gitbutlerapp/gitbutler/blob/3742349a2217210b8f69abe8cf3a5e9da7f09227/crates/gitbutler-tauri/src/main.rs#L66
https://github.com/Byron/gitoxide/blob/5ffccd2f08d70576347e3ae17a66ca5a60f1d81c/gix-path/src/env/mod.rs#L36

I don't know why it doesn't find it in PATH, but there doesn't seem to be a way to use the absolute path.