[Task](elektra): integrate 3rd-party UIs via npm

[andypf]

Task Description

As part of the decommissioning of the assets server, we need to integrate third-party UIs in elektra, such as Limes and Email, without relying on the assets server. The proposed approach is to use the GitHub npm registry. Instead of loading these UIs at runtime from the assets server, they can be added to package.json in Elektra and included at build time.

We'll begin with Limes and then extend this approach to include Email.

Subtasks

• Create a GitHub workflow in the Limes UI repository to publish an npm package to the GitHub npm registry.
• Add the published npm package to Elektra.
• Integrate and ensure functionality within Elektra.
• Extend this process to include the Email UI.