Support Tier 3 ClusterAPI Cloud Providers

[cre8minus1]

Arlon must work with Cluster API clusterSpecs stored in Git for the following providers.

Arlon must be able to create the cluster as an ArgoCD application object based on the clusterSpec from a git repo, automatically add the new cluster to ArgoCD and then deploy the profile.

Background is here

Tier 3

-[ ] BYOH

-[ ] Exoscale

-[ ] Sidero

-[ ] Hetzner

-[ ] Baidu Cloud

-[ ] Alibaba Cloud

-[ ] Tencent Cloud

Aha! Link: https://pf9.aha.io/features/ARLON-152

[cruizen]

This will follow #62 and #63