Add a new guideline to aovid using non-local returns

[elbrujohalcon]

Before merging this PR, go over this checklist:

• [x] The rule is listed in the table of contents
• [x] The rule text respects the structure:
  • [x] Title
  • [x] Short Description
  • [x] Examples
  • [x] Reasoning
• [x] It provides links to examples in code for
  • [x] good scenarios
  • [x] bad scenarios