Non networked data fields should be warnings

[metalgearsloth]

Specifically they really should be either readonly or networked. There might be situations where this is fine but most of the time content should be networking these.

[Tayrtahn]

This should be easy enough for components using auto-networking, but manual states make things a bit more complicated.

I definitely could make an analyzer that checks this for auto-networked components only. Just check that each DataField is either readonly or has AutoNetworkedField, right?