[Anchor] Lack of Code Formatting

[julianzamt]

Describe the bug
Not a bug, but something to have in mind.
As stated in the Get Started Docs, this is not implemented yet, but it is a quite easy fix that we can add to the generation pipeline that will add value to our product.

To Reproduce
1 - Generate any Anchor program
2 - take a look at the lack of formatting in the generated code.

Expected behavior
1- Include rustfmt as required dependencies for codigo
2- execute cargo fmt from the root directory of the generated code.

Screenshots
Before

After

Código CLI version:

• Version v0.8