Spike: Work Items - Create/edit flows: Apply template

Summary

This is the spike issue for creating a work items template details found in #428690 (closed). This technical spike aims to investigate and plan the implementation of the "Apply template" feature for Work Items Create/Edit flows. The feature will allow users to select and apply description templates when creating or editing work items, similar to the functionality in legacy issues.

Spike Goals

• Analyze the current implementation of description templates in legacy issues.
• Investigate the necessary changes to make the existing issue description template system available via GraphQL.
• Explore the best approach to inject text into the editor.
• Determine the most efficient way to integrate the template selection and application into the Work Item Create/Edit experience.
• Identify any potential challenges or limitations in implementing this feature within the current Work Items architecture.
• Estimate the effort required for both backend and frontend development.
• Propose a high-level implementation plan, including any necessary API changes or new endpoints.
• Consider the user experience and interface design for the template selection process within the modal layout.
• Evaluate any performance implications of adding this feature to the Work Items create/edit flows.
• Identify any documentation or UI text changes that will be required.

Acceptance Criteria

• A detailed analysis is produced, covering all spike goals.
• A proposed implementation plan is outlined, including backend and frontend tasks and their weight estimates.
• Potential risks and mitigation strategies are identified.

This spike will help us understand the technical requirements and challenges involved in implementing the "Apply template" feature for Work Items, ensuring a smooth integration with the existing system and a user-friendly experience.