Bring git status formatting closer to regular git

[derekthecool]

Hello, great work with this module!

I would love if the git status view had more color and looked closer to regular git.
It may sound quite petty but some days I would stop using ugit because how git status looked.
Colors in the terminal are a spark of joy!

Let me share some screenshots as examples.
Using ugit 0.4.5.1 git status output looked like this for me
(while reviewing this issue, I see this one already omits the gitroot from my code changes - PR soon)

And another example

Example of a normal git status output

Things I see that could be improved in ugit

• On Branch has a capital B and would look better with On branch (maximum pettiness here I know!)
• No color! I see that the branch name is supposed to be colored but sometimes it has no color for me.
• Incorrectly showing clean git directory
• GitRoot at the top is unhelpful and would probably be better removed