[FEATURE] Improve Gitmode implementation

[jgabaut]

0.0.7 added a naive implementation for the Gitmode branch in do_build(). See PR.

Using Command for each needed step should be avoided, when a more idiomatic Rust solution can be used instead.

The basic pipeline should be something like:

git checkout <query> && git submodule update --init -recursive && make && mv <bin> <tag_dir> && git switch - && git submodule update --init --recursive

Note

Version 0.1.6 runs make rebuild by default and make when --no-rebuild is passed.

I think there's some git flag we can use to do the checkout and first submodule prep in one command.

Steps

• Checkout requested tag
• Init submodules to tag status
• Run make
• Move the build binary to build_tag dir
• Switch back to original HEAD
• Init submodule to original HEAD status

[jgabaut]

I'm setting Run make as done since I don't think it can be done differently than as a Command call. Still it could be wrapped in a function at least.

ATM, version 0.1.6 runs make rebuild by default and make when --no-rebuild is passed.