[pipes-functions] Adding new functions for pipe part-7

[pratikmota]

Changes:

1. Adding support for rye file for append-to-file function ( Previous PR comment suggetion)
2. Adding error function
3. Adding function to set-error on pipe

Testing:

1. Related previous PR comment. Okay, I understood use of cc now. Thank you.(We can switch similar we switch folder using cd). Thank you very much.
   
   Doubt: Once we switched using cc pipes , Is there any command we can return back from it?

2. Passing rye file on append-to-file . As per previous PR comment.
   
   

3. set-error on Pipe
   

4. Check error status of pipe
   If there is no error then it return 0 otherwise return error
   

[refaktor]

Thanks! I made tests now in a way so that separate test sections can be ran, which was your proposal I remember. You could create a new file pipes.rye for tests of this module there id you wish and then just run that one, so you have better overview. I will also improve the tests output next.