Houdini: Add Static Mesh product-type (family)

[MustafaJafar]

Changelog Description

This PR adds support to publish Unreal Static Mesh in Houdini as FBX

Quick recap

• Add UE Static Mesh Creator
• Dynamic subset name like in Maya
• Collect Static Mesh Type
• Update collect output node
• Validate FBX output node
• Validate mesh is static
• Validate Unreal Static Mesh Name
• Validate Subset Name
• FBX Extractor
• FBX Loader
• Update OP Settings
• Update AYON Settings

Testing notes:

Create instance while selecting

1. an Obj Level subnetwork with some node inside it.
2. an obj node (e.g. a box)
3. a SopNode

[MustafaJafar]

Checkpoint

Some code is refactored.

• UE Static mesh creator allows selecting sop node or obj node
• Static mesh collector adds fbx family which triggers fbx extractor
• It's possible to use other extractors but I'm not sure if that would break the validators
• It includes four validations
  • ValidateFBXOutputNode which should check if output node exists and it has geometry.
  • ValidateMeshIsStatic which checks if output node or it's output children are time dependent
  • ValidateUnrealStaticMeshName which checks if output node or it's output children includes collision prefix
  • ValidateSubsetName which checks if subset name is correct + a fix action
• it includes fbx extractor and loader

It still lacks:

• Better error messages, I intent to use xml (to provide better guidance about dealing with errors)
• Checking geometry existence, which is not yet included ValidateFBXOutputNode

[MustafaJafar]

Checkpoint

Some code is refactored.

• UE Static mesh creator allows selecting sop node or obj node
• Static mesh collector adds fbx family which triggers fbx extractor
• It's possible to use other extractors but I'm not sure if that would break the validators
• It includes four validations
  • ValidateFBXOutputNode which checks if output node exists, has geometry and doesn't include invalid primitives.
  • ValidateMeshIsStatic which checks if output node or it's output children are time dependent
  • ValidateUnrealStaticMeshName which checks if output node or it's output children includes collision prefix
  • ValidateSubsetName which checks if subset name is correct + a fix action
• it includes fbx extractor and loader

[antirotor]

Some comments about naming, but otherwise it looks great and from what I've tested it works.

[MustafaJafar]

Create Unreal static mesh is renamed to Create static mesh
Validator ValidateUnrealStaticMeshName is turned off by default

In order to enable Static mesh validation, it is required to do two steps:

1. add houdini host to staticMesh subset name profiles,

without it, subset name validator won't complain.

2. Turn on this houdini validator