Configuration: Add more advanced bare metal hosting configuration

[tebriel]

Changes made

Web Asset Config Object

There's a new WEB_ASSET_SERVER struct which lets you set the host/port of the node.js server. It sets the PORT env in the cmd runner which the nodejs web server supports.

Watcharr Host/Port config

API_PORT and API_HOST lets us override the binding and the port for the Watcharr go executable.

For Reviewer

• Should I choose different names for the configs?
• Should the main configs be sub structs like the web server?
• Since these affect how it launches should they be env vars instead?