Convert all projects from spaces to tabs

As of preference and accessibility the width of a tab/indentation should be adjustable without altering the code itself.
That's why all projects should be converted to tabs and CS rules adjusted properly to enforce tabs forever.

The issue names no files or tests. Start by inventorying the organization’s projects and their CS rules, then determine the scope of the formatting conversion. Done means all projects use tabs and the rules enforce that preference consistently.

Written by the indexing model from the issue text.