NEW: beginner recipe on layer parameters

[loganthomas]

Fixes #2924
Re-implements #2914 (accidental deletion from forked repo)

Description

New beginner recipe on how to access model parameters, collect trainable parameters, and use torchinfo.summary()

• How to inspect a model's parameters using .parameters() and .named_parameters()
• How to collect the trainable parameters of a model
• How to use the torchinfo package (formerly torch-summary) to print a model summary

Checklist

• The issue that is being fixed is referred in the description (see above "Fixes #ISSUE_NUMBER")
• Only one issue is addressed in this pull request
• Labels from the issue that this PR is fixing are added to this pull request
• No unnecessary issues are included into this pull request.

cc @sekyondaMeta @svekars @kit1980 @brycebortree

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/tutorials/2948

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