[TASK]Represent user activities in a standardized format.

[Basartemiz]

Represent User Activities in a Standardized Format

📌 Description

The platform should represent user activities in a standardized format following Activity Streams 2.0 specifications.
This ensures interoperability, portability of data, and supports building consistent activity feeds for users and the community.

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✅ Acceptance Criteria

• All user activities (e.g., logging waste, completing challenges, earning badges, posting tips) are recorded in a standardized schema.
• Adopt Activity Streams 2.0 format for representing activities.
• Activities include required fields (actor, verb, object, target, time).
• The system provides an API endpoint to fetch standardized activity streams.
• Verified that activity data can be reused for feeds, analytics, and sharing.

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📋 Tasks

• Define the Activity Streams 2.0 data model for our platform.
• Implement backend logic in Django REST Framework to log activities in standardized format.
• Store activities in a dedicated activity log table in MySQL.
• Expose activity streams via API (JSON format).
• Integrate activity feed on user dashboard and community pages.