feat: add rspack to sample app

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Codecov Report

✅ All modified and coverable lines are covered by tests.
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@@           Coverage Diff           @@
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  Coverage        ?   25.39%           
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  Files           ?       40           
  Lines           ?     1213           
  Branches        ?      245           
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  Hits            ?      308           
  Misses          ?      889           
  Partials        ?       16           

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[openshift-ci]

@logonoff: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/all-packages	848e204	link	true	/test all-packages

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