This adds two more methods:
- `NETWORK:UrlEncode()`: Encode a single string value.
- `NETWORK:EncodeQueryParameters()`: Encode a table as query string.
For now there are two methods:
- `NETWORK:IsUrlAllowed()`: Check whether access to a certain URL is allowed.
- `NETWORK:HttpRequest()`: Perform an HTTP request.
By default access to the network is disabled for all target hosts. It
can be enabled by setting `HttpEnable=1` in the preferences. Individual
hosts have to be added to `HttpAllowHosts` as a comma separated list to
allow access.
See included docs for more details on usage.
