feat: enhance cluster support + restructure

[tanmoysrt]

Enhance experience of multi cluster support by rearchitecting -

• Add support to run commands, http requests, unix sockets, rsync over SSH
• Decouple Swiftwave from actual operation. It's mean that , if swiftwave node wants to act as managerial node, it can have that flexibility.
• Move possible configs from config.yml to database for consistency.
• Add support to configure docker registry. (We don't need to run our own by default in cluster mode, but we can provide option to spin up one)
• Provide option to register node from primary server
• On deletion of volume connect to each node and ensure to delete volume from all nodes over SSH docker socket
  > Note: Don't attempt to delete anything if any node down, as it can cause inconsistency
• Add support to install HAProxy + UDPProxy on other nodes + control over SSH
• Collect resource stats of each server & container over SSH
• Provide feature to SSH to other server from directly dashboard

Lower priority features -

• If possible, move the maximum part of installation from CLI to website. (haproxy, udpproxy related commands may be removed, once management support added to website)

Part 2 - #412