Add AI Dev Jobs

[unitedideas]

Added AI Dev Jobs to the Job and AI categories.

AI Dev Jobs is a free AI and machine learning job board with 7,600+ jobs from 480+ companies. It also offers a free REST API and MCP server for programmatic job searching.

• Resource is highly or exclusively related to programming and development
• Resource is not a duplicate (checked README for existing entries)
• Added in alphabetical order within the resource file
• Resource format follows the TypeScript template

[github-actions]

New resource link: https://aidevboard.com

[github-actions]

🤖 Automated PR Validation

⚠️ Issues Found

The following issues were detected. GitHub Copilot will review this PR and report any additional issues.

Resource Validation Errors

🔤 Alphabetical Order

• a.ts:145: Resource "AI Dev Jobs" should come before "AI Directories"
• n.ts:75: Resource "NexTool" should come before "Nextradar"
• o.ts:29: Resource "Octotree" should come before "OrcaSheets"

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• Code quality and style issues
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📚 Resources:

• Contribution Guidelines
• Valid Categories

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