fix: detect ROP USD Render output directories

[lucaseck]

Fixes: #191

What was the problem/requirement? (What/Why)

• Output directories were not being detected from USD Render ROPs
• The output override field was not being taken into account when detecting USD Render output directories
• Output directories were not being detected from specified LOP Paths in the USD Render nodes

What was the solution? (How)

• Add a new handler for USD Render nodes(both LOP and ROP USD Render nodes)
• Add logic for taking the override output path if one is provided in the nodes
• Add logic for taking the specified LOP Path node as the node to detect output directories from if one is provided
• Fixed an additional bug where we weren't checking that a USD Prim was invalid(doesn't exist) or not

What is the impact of this change?

More output directory detection cases are handled

How was this change tested?

Manually tested by creating a scene with both a ROP USD Render node and a LOP USD Render node. Verified all of the cases for overrides, LOP Paths, regular inputs to the nodes worked for detecting the output directories.

• Have you run the unit tests?
  Unit tests passed

Was this change documented?

No

Is this a breaking change?

No

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud