Add license to 5 books

[azamshaikh1103]

What does this PR do?

Add info based on #11355

For resources

Description

• Jenkins: The Definitive Guide (PDF)
  License (CC BY-NC-ND) found on PDF page 20

• Learning Jenkins Compiled from StackOverflow Documentation (PDF)
  License (CC BY-SA) found on PDF page 4

• Introducing Julia - Wikibooks
  License (CC BY-SA) found in the footer section

• Julia Data Science - Jose Storopoli, Rik Huijzer, Lazaro Alonso
  License (CC BY-NC-SA) found in the footer section

• Learn Julia in Y minutes - Leah Hanson
  License (CC BY-SA) found in the footer section

For book lists, is it a book? For course lists, is it a course? etc.

• It's a book

Checklist:

• Read our contributing guidelines.
• Search for duplicates.
• Include author(s) and platform where appropriate.
• Put lists in alphabetical order, correct spacing.
• Add needed indications (PDF, access notes, under construction).
• Used an informative name for this pull request.

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

[azamshaikh1103]

Description for 2nd commit

• Learning Kotlin - Compiled from StackOverflow Documentation (PDF)
  License (CC BY-SA) found on PDF page 12

• Kotlin Quick Reference - Alvin Alexander (gitbook)
  License (CC BY-SA) found under license section

• Kotlin Notes for Professionals - Compiled from StackOverflow documentation (PDF)
  License (CC BY-SA) found below reviews

• Essential Kotlin - Krzysztof Kowalczyk, StackOverflow Contributors
  License (CC BY-SA) found in the introduction

• Think Julia - Ben Lauwens, Allen Downey (GitBook)
  License (CC BY-NC) found in the homepage under license tab

• Quantitative Economics with Julia - Jesse Perla, Thomas J. Sargent, John Stachurski (HTML, PDF) (:card_file_box: archived)
  License (CC BY-SA) found in the footer section