Add recommended job boards

[BuckyMaler]

@armankhondker congratulations and thank you for publishing this incredible roadmap!

Do you think it'd be beneficial to add a "💼 Job Boards" section? In several of your X threads I came across individuals asking where they can find AI/ML jobs. I can get the ball rolling with goodfirstjob.com. There've been 100 AI/ML internships posted in the last 30 days. The job data is sourced from SimplifyJobs/Summer2025-Internships and SimplifyJobs/New-Grad-Positions.

If you think it's a good idea, I'd be happy to open a PR.