Reduce directories' sizes by using `git clone --depth=1`

[sidahmed-malaoui]

We can reduce the size of tools cloned with git by using git parameter --depth=1. This parameter allows us to clone only the latest commit. And when we want to update the tool, we can use git pull as usual without any problem.

Examples of space we can gain with some tools :

With radare2 :

git clone https://github.com/radareorg/radare2
du -sh radare2/
> 176M    radare2
git clone --depth=1 'https://github.com/radareorg/radare2'
du -sh radare2/
> 62M     radare2

With beef :

git clone 'https://github.com/beefproject/beef'
du -sh beef/
> 45M     beef
git clone --depth=1 'https://github.com/beefproject/beef'
du -sh beef/
>35M     beef

If you like the idea, I can do a small pull request for that if you want.

[HackingDave]

Sounds good to me, feel free to submit the PR. I like it.