Added Tutorial for Fast api

[Dibbu-cell]

What does this PR do?

Add resource(s)

IMPORTANT

• [x] Read our contributing guidelines.
• [ ] Is this a revision of a previously submitted PR? If so, STOP! Go back, reopen the PR, and add commit(s) the branch you previously submitted. Please don't make the job of reviewing more difficult by hiding previous work.

For resources

Description

Adds Fastapi tutorial to the Python section.

Why is this valuable (or not)?

FastAPI is a popular modern Python web framework, and accessible, high-quality, free resources for it are valuable to the Python and web development community.

How do we know it's really free?

This is freely available at https://www.geeksforgeeks.org/python/fastapi-tutorial/

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

this is a tutorial .

Checklist:

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

Follow-up

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

[eshellman]

It's usually not helpful to add a category for a single resource. Try to find another category, or see if there are other books in our lists that would fit into your category. Just include it in the python category.

[github-actions[bot]]

Linter failed, fix the error(s):

free-programming-books/more/free-programming-interactive-tutorials-en.md
383:1-401:93  warning  Alphabetical ordering: swap l.401 and l.400  alphabetize-lists  remark-lint

[github-actions[bot]]

Linter failed, fix the error(s):

free-programming-books/more/free-programming-interactive-tutorials-en.md
377:1-378:75  warning  Incorrect number of blank lines between last section and next heading  blank-lines-1-0-2  remark-lint

[Dibbu-cell]

I have done the appropriate changes