diff command: output in markdown format with hash

[PuneethaPai]

• ❗ I have followed the Contributing to DVC checklist.

Fixes #4313

PS: there may be scope for refactoring. Inputs are welcome ❗ 😄

[PuneethaPai]

Is sorting file paths based on name necessary?

Because looking at code, only for --show-md we are sorting files.

For default and show-json we are not sorting files. But doc string says files will be sorted for better readability here

[pared]

One cosmetic change

[PuneethaPai]

Is sorting file paths based on name necessary?
Because looking at code, only for --show-md we are sorting files.
For default and show-json we are not sorting files. But doc string says files will be sorted for better readability here

Any inputs on this. I still feel json and default formats of dvc diff is not sorting file names ❗
Only sorting in markdown seems inconsistent.. 😟

[efiop]

@PuneethaPai Thank you for your patience! Good catch! Indeed, for json it doesn't really matter, since it is meant for programmatic use anyways. But default output would indeed benefit from sorting. Added checkbox in #2982

Thank you so much! 🙏