Add FastAPI comprehensive course to Python Web Applications

[hackerccreative]

Added a link to a comprehensive course on creating APIs with Python.

Description

Motivation and Context

How Has This Been Tested?

Types of changes

• Content Update (change which fixes an issue or updates an already existing submission)
• New Article (change which adds functionality)
• Documentation change

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have made checks to ensure URLs and other resources are valid

[Copilot]

Pull request overview

Adds a new learning resource link under the Python “Web Applications” section to help readers find a comprehensive course on building APIs with Python.

Changes:

• Added a FreeCodeCamp “Creating APIs with Python” comprehensive course link to the Python Web Applications list.

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[hackerccreative]

Added a FastAPI tutorial under Python > Web Applications.
This is a 19-hour freeCodeCamp course that teaches building
a full API from scratch with database, authentication, Docker
and deployment. It doesn't already exist in the list.