- We don't need to copy the init file. Just crawl the custom nodes dir for modules and import them all. Dunno why I didn't do this initially.
- Pass the logger in as an arg. There was a race condition where if we got the logger directly in the load_custom_nodes function, the config would not have been loaded fully yet and we'd end up with the wrong custom nodes path!
- Remove permissions-setting logic, I do not believe it is relevant for custom nodes
- Minor cleanup of the utility
Previously, custom node loading occurred _during module imports_. A consequence of this is that when a custom node import fails (e.g. its type clobbers an existing node), the app fails to start up.
In fact, any time we import basically anything from the app, we trigger custom node imports! Not good.
This logic is now in its own function, called as the API app starts up.
If a custom node load fails for any reason, it no longer prevents the app from starting up.
One other bonus we get from this is that we can now ensure custom nodes are loaded _after_ core nodes.
Any clobbering that may occur while loading custom nodes is now guaranteed to be a custom node clobbering a core node's type - and not the other way round.
