CAT 505 - Support crud of principles

[kaggis]

Goal

Support

• Viewing list of principles
• View Principle details
• Update Principle details
• Create new Principle
• Delete Principle

Implementation

• Convert old principe type to AssessmentPrinciple to distinguish it and avoid conflicts with new Principle type declarations
• Implement Principle related types
• Implement Principle related backend service query/mutation hooks (create, read, update, delete)
• Implement Principles component to display list of principles
• Implement PrinciplesDetails component to display detailed view of a principle
• Implement PrincipleModal to insert/edit details for a principle
• Use DeleteItem Modal to confirm deletion of a principle
• Minor cleanup and fixes (back button, delete icon)