[Feature]: Added logic for tracking application last modified by

[aybruhm]

Description

This PR introduces a minimal app tracking functionality by introducing fields to capture both the updated_at timestamp and the user responsible for modifications (modified_by). These changes span both the frontend and backend, ensuring accurate tracking of application updates.

Related Issue

Closes AGE-541

Changes

• Frontend:

  • Updated the ListAppItem interface and AppCard component to include the updated_at field.

• Backend:

  • Added a modified_by_id column to the AppDB model for tracking the last user who modified an application.
  • Enhanced the app API converter model to include the updated_at field.
  • Implemented a new function in app_manager to update the last_modified_by attribute whenever an application is modified.
  • Added functionality in the routers to track the last_modified_by user.

What to QA

• New Variant:
  • Test creating and deleting a new variant.
• Variant Deployment:
  • Deploy a new variant and verify that it works as expected.
• Variant Updates:
  • Update a variant and confirm the changes are reflected correctly.
• Evaluator Management:
  • Create, delete, and update evaluators and ensure they behave as intended.
• Evaluation Runs:
  • Run both automatic and human evaluations, validating that they complete without issues.
• Human Evaluation Management:
  • Test creating, updating, and deleting human evaluations.
• Auto Evaluation Management:
  • Test creating and deleting auto evaluations.

Acceptance Tests

• Ensure that the routers responsible for variant creation/deletion, deployment, evaluator management, and evaluations work correctly.
• Verify that all relevant endpoints behave as expected when performing the above actions.

Note (New Schema Changes): The Alembic migration script needs to be applied using the following command:

docker exec -w /app/agenta_backend/migrations/postgres agenta-backend-1 alembic -c alembic.oss.ini upgrade head

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Name	Status	Preview	Comments	Updated (UTC)
agenta	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 26, 2024 0:48am
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[aybruhm]

QA Report:

https://agenta-hq.slack.com/archives/C05JT3NQB1R/p1724836582223729?thread_ts=1724757298.386189&cid=C05JT3NQB1R

[zenUnicorn]

All tests run successfully without issues ✅