enhancement: configurable share role icons

[fschade]

Description

Introduce themeable sharing role icons which are used in the sidebar sharing dialog.

Related Issue

• Fixes enhancement: configurable share role icons #10801
• Fixes [Sharing NG] Remove share role icon map #10777

Motivation and Context

give the individual user the ability to customize the look of the sharing role dropdown

How Has This Been Tested?

• missing unit tests

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests
• Documentation
• Maintenance (e.g. dependency updates or tooling)

[JammingBen]

Docs still need the naming adjustment, rest LGTM 👍

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
81.2% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[kulmann]

This PR has caused a schema validation error on the default theme:

ZodError: [
  {
    "code": "invalid_type",
    "expected": "object",
    "received": "undefined",
    "path": [
      "common",
      "shareRoles"
    ],
    "message": "Required"
  }
]

[JammingBen]

This PR has caused a schema validation error on the default theme:

Did you run pnpm build? I can't reproduce it 🤔

[kulmann]

This PR has caused a schema validation error on the default theme:

Did you run pnpm build? I can't reproduce it 🤔

thank you 😆 🤦🏻‍♂️