Add ViT QNN example

[ssss141414]

Describe your changes

Add ViT (https://huggingface.co/google/vit-base-patch16-224) QNN example.

Checklist before requesting a review

• Add unit tests for this change.
• Make sure all tests can pass.
• Update documents if necessary.
• Lint and apply fixes to your code by running lintrunner -a
• Is this a user-facing change? If yes, give a description of this change to be included in the release notes.
• Is this PR including examples changes? If yes, please remember to update example documentation in a follow-up PR.

Metrics

{
    "accuracy-accuracy_score": {
        "value": 0.765625,
        "priority": 1,
        "higher_is_better": true
    },
    "latency-avg": {
        "value": 103.84934,
        "priority": 2,
        "higher_is_better": false
    }
}

[github-advanced-security]

lintrunner found more than 20 potential problems in the proposed changes. Check the Files changed tab for more details.