feat(backend): Add credit for Jina/Search & LLM blocks

[majdyz]

Background

Block that use 3rd-party service can introduces cost, the use should be able to manage its usage.

Changes 🏗️

Add run quota/credit on SearchTheWebBlock & ExtractWebsiteContentBlock.

Testing 🔍

Note

Only for the new autogpt platform, currently in autogpt_platform/

• Create from scratch and execute an agent with at least 3 blocks
• Import an agent from file upload, and confirm it executes correctly
• Upload agent to marketplace
• Import an agent from marketplace and confirm it executes correctly
• Edit an agent from monitor, and confirm it executes correctly

[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Cost Validation Verify if the cost amounts for SearchTheWebBlock and ExtractWebsiteContentBlock are appropriate and align with the actual usage of these services. Import Optimization Consider grouping related imports together for better code organization. The new import for search blocks could be moved closer to other block imports.