Dynamic Menu Integration and Docker Build Fixes

[anushacs-dell]

Summary

This PR introduces a dynamic approach to rendering header menu tabs based on the links provided by the OGC API landing page (/ogc-api/). Instead of hardcoding paths such as processes, jobs, or conformance, the application now fetches and renders tabs dynamically from the backend response.

Changes Made

Created a composable (useLandingLinks.ts) to fetch links from the OGC API landing page
Updated (header.vue) to:
Dynamically display the (Home) tab on the left.
Populate the right aligned tabs using other available (.html) links from the backend.
Automatically generate readable labels from the urls (processes.html - Processes).
Removed previous static menu implementation.

• Created GitHub Actions workflow ('docker-multiarch.yml') to build and push multi-arch Docker images on release
• Verifying successful build locally and through GitHub Actions