docs: Getting started quide mentions Intel Tiber Cloud

[mkbhanda]

https://opea-project.github.io/latest/getting-started/README.html
mentions Tiber cloud but provides no link for external/internal parties to request resources. Need to add. For completeness could add a sentence or two that the user could request a single virtual machine of an adequate size to do a single node docker deploy or obtain a kubernetes cluster of one or more nodes of adequate size. This is left to the user.

[mkbhanda]

We recommend for single node deployments instances equivalent to AWS Mi7 large or Xlarge https://aws.amazon.com/ec2/instance-types/m7i/

Intel Tiber Cloud link: https://console.cloud.intel.com/home/
https://console.cloud.intel.com/compute/reserve?backTo=catalog request a large VM instance