Add Meshery and Kanvas

[Denish3436]

This pull request adds Meshery and Kanvas to the DevOps and Kubernetes Tools section.

• Meshery is a highly extensible CNCF project enabling collaborative design and operation of cloud-native infrastructure, focusing on managing and observing Kubernetes clusters.
• Kanvas is a collaborative designer and operator for cloud-native infrastructure, helping teams efficiently manage and visualize Kubernetes resources.