Vespa on ARM64

Vespa.ai, an open-source platform since 2017, has expanded its container image support to include both x86_64 and ARM64 architectures, enhancing its versatility across different hardware platforms. The Vespa team has extensively tested ARM64 to ensure optimal performance, allowing application owners to benchmark and select the most cost-effective and efficient CPU architecture for their needs. This multi-platform support facilitates easier development and deployment workflows, particularly benefiting developers using ARM-based devices like Apple's M1 MacBooks, as they can seamlessly work with the vespaengine/vespa image. The new capabilities also extend to Vespa Cloud, providing users with more options for resource and vendor optimization.