Issue Summary

Requesting the ability to create custom fields at the project level (e.g., Project Start Date and Project End Date) that can be utilized in Jira's dashboards, specifically with the inbuilt 'Project' gadget.

Jira currently lacks the functionality to add custom fields at the project level. This limitation prevents users from capturing project-specific metadata, such as Project Start Date and Project End Date, which are crucial for tracking and managing projects effectively.

Proposed Solution:

1. Introduce the ability to define custom fields at the project level (similar to issue-level custom fields).
2. Allow these project-level fields to be populated and managed via the project settings interface.
3. Enable integration of these project-level fields with existing dashboard gadgets, such as the 'Project' gadget, to display values like Project Start Date and Project End Date.