Doc and blog about bash_print_tree

[aangelo9]

Specs

• We want to write a how to guide for bash_print_tree() from helpers/lib_tasks_bash.py

• We want to explain the flow of creating a tree, adding comments, then updating the tree since the dir have changed, etc.

• Doc should be placed under docs/tools/all.invoke_bash_print_tree.how_to_guide.md

• Documentation Markdown should include:

  • Comprehensive explanation of the goal of the invoke
  • Description of its behavior and instructions on how to use it
  • Limitations, ways to develop further in the future

• The output documentation should be

  • ready to be published as a blog entry on our Ghost platform (see https://ghost.org/help/using-markdown/)
  • included in our dev_system white paper

FYI @gpsaggese