Add resources for ClojureScript, Cypher, Cython, and Common Lisp

[connectwithvanshika]

Added verified and formatted resource links for the following languages:
• Cypher (Neo4j Query Language)
• Cython
• Common Lisp
• ClojureScript

Each section includes official documentation, tutorials, and relevant online courses.

Followed consistent markdown formatting for readability and standardization.

What does this PR do?
Add resource(s)

IMPORTANT
Read our contributing guidelines.
Is this a revision of a previously submitted PR?
For resources
Description
Adds official and high-quality learning resources for Cypher, Cython, Common Lisp, and ClojureScript.

Why is this valuable (or not)?
These are verified, beginner-to-advanced references that expand the repo’s coverage of important programming languages and tools.

How do we know it's really free?
All linked materials are publicly available without paywalls, registration, or subscription requirements.

For book lists, is it a book? For course lists, is it a course? etc.
Includes official documentation (HTML/PDF) and an online course (Neo4j GraphAcademy).

Checklist:
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
Checked the status of GitHub Actions and resolved any warnings.

[github-actions]

Linter failed, fix the error(s):

free-programming-books/books/free-programming-books-langs.md
 577:1-593:76  warning  Incorrect number of blank lines between last section and next heading  blank-lines-1-0-2  remark-lint
630:1-634:123  warning  Incorrect number of blank lines between last section and next heading  blank-lines-1-0-2  remark-lint
638:1-640:126  warning  Alphabetical ordering: swap l.640 and l.639                            alphabetize-lists  remark-lint
666:1-670:157  warning  Incorrect number of blank lines between last section and next heading  blank-lines-1-0-2  remark-lint
674:1-675:130  warning  Incorrect number of blank lines between last section and next heading  blank-lines-1-0-2  remark-lint