feat(remote-sync): Enable remote syncing based on an API response

[TylerGauntlett]

Why?

The current rsync.json file only supports a statically defined location. This works find for statically defined host/IP addresses but doesn't work well if the remote source goes through another proxy layer (ie K8 ingress, reverse proxy, etc)

How?

To resolve this, I added the ability to define a host/IP address from the result of an API call. This expands on the current rsync.json file while preserving backwards compatablity.

Example

{
    "apiLocation": {
        "url": "https://example-website/api/info",
        "user": "root",
        "ip": "serverIpAddress",
        "path": "/var/www/assets/example-website"
    }
}

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