Add WandbPlugin, NsysPlugin and PreemptionPlugin to nemo.lightning.run.plugins

[hemildesai]

What does this PR do ?

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Collection: [Note which collection this PR will affect]

Changelog

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Usage

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# Add a code snippet demonstrating how to use this 

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Additional Information

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[maanug-nv]

can you include some example of how this would be used (at least in PR description)

[ShriyaPalsamudram]

LGTM, thanks