Enable Q/DQ opt with multiple inputs

[boomitsnoom]

Summary:
This diff augments the QuantizedInputWrapper to support multiple inputs, and quantize one of them.

Example of graph before fusion:
{F1987256732}

Example of graph after fusion:
{F1987256611}

Reviewed By: ethansfng

Differential Revision: D98233766

[pytorch-bot]

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✅ You can merge normally! (2 Unrelated Failures)

As of commit f973810 with merge base c72d176 ():

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.

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[meta-codesync]

@boomitsnoom has imported this pull request. If you are a Meta employee, you can view this in D98233766.