Audit and reclassify node catalog

[Keavon]

For each node:

• Standardize node and parameter names
• Classify into new category naming scheme (or remove entirely)
• Ensure input invariants are enforced (even when fed via the graph)
• Consider if it can be generalized and combined with other nodes

[TrueDoctor]

Can we add category for internal/experimental nodes which the user needs to opt in to see? There are a bunch of nodes which currently confuse users but always removing them kills dev speed. I'd imaging something like a toggle in the preferences to opt into that experimental tag/group

[Keavon]

Sure, or even just a clearly named category like "Dev Use Only".