Add stdin capacity to rit build formula

[viniciussousazup]

What would you like to be added:
Add flag --stdin to rit build formula

Why is this needed:
Today the rit build formula need user interaction, this is a problem to CI integration and general automation.

[rodrigo-brito]

Hi @viniciussousazup, are you working on it?

[viniciussousazup]

Hi @rodrigo-brito, I am not working on it, If you want you can take it.

[rodrigo-brito]

No problem, I will try another one.

[GuillaumeFalourd]

No problem, I will try another one.

@rodrigo-brito , I've assigned the issue to you as @viniciussousazup said he wasn't working on it.

But let me know if you want to work on another one, and I'll remove the assignment 👍🏼

[rodrigo-brito]

Ok, I will try this weekend.

[aronrichter]

Hey guys... how's going? Can I take this issue?

[GuillaumeFalourd]

Hi @aronrichter , thank you for your message.
We didn't get any return from @rodrigo-brito until know so if you're interested in working on this ISSUE, I can assign it to you as well 👍🏼

[rodrigo-brito]

Hi @aronrichter and @GuillaumeFalourd. Sorry for the delay in the report.
I am focused on another issue this week, you can take it. Have fun!

[brunasilvazup]

Unfortunately, we have a new PR (#692) that will disable the rit build formula command, which is the main change in this Issue.
Thus, we will close this issue.