Add torch conditionals: IfElse

[Ch0ronomato]

Description

Adds the IfElse node for torch, using torch.where

Related Issue

• [ ] Closes #939
• [ ] Related to #821

Checklist

• [x] Checked that the pre-commit linting/style checks pass
• [x] Included tests that prove the fix is effective or that the new feature works
• [ ] Added necessary documentation (docstrings and/or example notebooks)
• [X] If you are a pro: each commit corresponds to a relevant logical change

Type of change

• [X] New feature / enhancement
• [ ] Bug fix
• [ ] Documentation
• [ ] Maintenance
• [ ] Other (please specify):

[Ch0ronomato]

@ricardoV94 could you PTAL?

[Ch0ronomato]

hmmm - this branch got messed up - i'm gonna close the branch and make a new one.