Hiero: loading effect family to timeline

[jakubjezek001]

Brief description

Loader for loading effects to timeline

Description

Hiero is having available loader for multi loading of effects to active timeline

Additional info

• also fix of multiselected loading

Testing notes:

1. open vfx testing project
2. open loader at any active timeline
3. select effect subset in multiselected assets
4. chose load effect and see all effects were loaded

[ynbot]

Task linked: OP-4201 Load effectPlates from Hiero

[jrsndl]

Works as described for "look" effects. Multiselection works.

Note that loading fails on animated transforms.

Traceback (most recent call last):
  File "C:\Users\robur\OpenPype\openpype\tools\loader\widgets.py", line 1578, in _load_representations_by_loader
    options=options
  File "C:\Users\robur\OpenPype\openpype\pipeline\load\utils.py", line 299, in load_with_repre_context
    return loader.load(repre_context, name, namespace, options)
  File "C:\Users\robur\OpenPype\openpype\hosts\hiero\plugins\load\load_effects.py", line 65, in load
    data_imprint
  File "C:\Users\robur\OpenPype\openpype\hosts\hiero\plugins\load\load_effects.py", line 122, in _shared_loading
    node[knob_name].setValue(knob_value)
ValueError: expecting a sequence of 2 floats, 200 found

Also, last efect loaded overwrites previous one when more than one plate has published effect for the same shot.

[jrsndl]

Works as described, even with multiple effects and animated transforms.
Tested in Hiero 13.2

[jakubjezek001]

@jrsndl please test it one more. I have found some bugs on Centos.

[64qam]

With this PR, Openpype menu is not integrated into Hiero 12 and Nuke Studio 12.

[jakubjezek001]

With this PR, Openpype menu is not integrated into Hiero 12 and Nuke Studio 12.

I have fixed this. Please try again.