Update free-podcasts-screencasts-ar.md

[Adamkaram]

adding podcast

What does this PR do?

Add resource(s) for a podcast

Description & Why is this valuable (or not)?

it's wonderful podcast talking about javascript and library , frameworks in general how it has been created and how we can create one also it's talking about runtime and ecosys for js also

How do we know it's really free?

it's there in youtube , spotify , apple podcast for free

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

podcast

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!