[Maintenance] Enforce use of absolute imports using import aliases

[devtobi]

Relevant template

refarch-frontend, refarch-webcomponent

Problem description (optional)

Currently using relative or absolute imports is allowed in frontend projects.
As vite provides the alias functionality to the src folder using @, we should always use this import style when possible.
There is tooling like https://github.com/dword-design/eslint-plugin-import-alias which enforces the usage.

Desired solution

A solution for ESLint to enforce the use of absolute imports via aliases.

Considered alternatives (optional)

No response

Additional context (optional)

No response

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