Memgraph high-availabilty chart

[antejavor]

In this PR we are introducing the first version of Memgraph in HA config. Memgraph HA cluster includes 3 coordinators, 2 data instances by default. The cluster setup is performed via the cluster-setup job.

• [x] Create stateful sets for coordinators and data instances
• [x] Fix args passing to work
• [x] Connect Memgraphs instances into cluster
• [x] Handle services
• [x] Support envs for enterprise
• [x] Handle services to the cluster
• [x] Handle configs
• [x] Handle versions
• [x] Handle READMES
• [x] Handle volumes
• [x] Handle running as root
• [x] StartupProbe, LivenessProbe, ReadynessProbe
• [x] Write basic test Related:
• [x] Handle tests, related: https://github.com/memgraph/helm-charts/issues/21

[antejavor]

It is expected for CI/CD to fail, since Memgraph 2.17.0 is still not released.