[Doc] New Contributors Guide

[asfimport]

Umbrella Issue for the Guide for new contributors for Python and R

Reporter: Alessandro Molina / @amol-
Assignee: Alenka Frim / @AlenkaF

Subtasks:

• [Doc] Tutorial - Python feature PR
• [Doc] Tutorial - R bindings
• [Doc] General outline
• [Doc] New Contributors Guide: Introduction + skeleton
• [Doc] Steps in making your first PR - finding issues
• [Doc] Steps in making your first PR - Set up
• [Doc] Steps in making your first PR - building C++
• [Doc] Steps in making your first PR - building R package
• [Doc] Steps in making your first PR - building PyArrow
• [Doc] Steps in making your first PR - Python bindings
• [Doc] Steps in making your first PR - R bindings
• [Doc] Steps in making your first PR - test in Python
• [Doc] Steps in making your first PR - test in R
• [Doc] Steps in making your first PR - PR life cycle
• [Doc] Helping with documentation
• [Doc] Additional info and resources
• [Doc] Arrow General Overview
• [Doc] New contributors guide updates

_{Note: This issue was originally created as ARROW-14278. Please see the migration documentation for further details.}

[asfimport]

Krisztian Szucs / @kszucs:
Feels great to close issues like this :)

Thanks @AlenkaF @thisisnic @dragosmg!

[asfimport]

Alenka Frim / @AlenkaF:
Nice to hear, thanks @kszucs! :D (y)