Configure a REST API node

A subset of the node configuration can be used to modify the behaviour of the HTTP REST API.

These are the relevant command line options:

CLI option	Description	Default value
`--rest`	Enable Waku REST HTTP server.	`false`
`--rest-address`	Listening address of the REST HTTP server.	`127.0.0.1`
`--rest-port`	Listening port of the REST HTTP server.	`8645`
`--rest-relay-cache-capacity`	Capacity of the Relay REST API message cache.	`30`
`--rest-admin`	Enable access to REST HTTP Admin API.	`false`
`--rest-private`	Enable access to REST HTTP Private API.	`false`

Note that these command line options have their counterpart option in the node configuration file.

Example:

wakunode2 --rest=true