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: lucylq

Differential Revision: D101700404

[pytorch-bot]

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⏳ 2 Pending, 3 Unrelated Failures

As of commit e5ce354 with merge base 0af4992 ():

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• pull / unittest / windows / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• pull / unittest-editable / windows / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• Test XNNPACK Backend / test-xnnpack / package-golden-artifacts (gh) (detected as infra flaky with no log or failing log classifier)

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[meta-codesync]

@boomitsnoom has exported this pull request. If you are a Meta employee, you can view the originating Diff in D101700404.

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