Rational

Implement GIT using this tutorial: https://wyag.thb.lt.
Tho tutorial is written in Python, but to make things more interesting, this project will be written in C++.
Also, this tutorial doesn't contain implementation of major git features, so they will be implemented here.

TODO

• Create tests.
• Implement staging area(git add, git status).
• Implement merge.
• Implement diff.
• Implement branches.
• Fix all TODOs
• Add .pack support