cherry-pick the fe_examples of the dev branch to the trunk branch

[TangMeng12]

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Summary

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what it exactly does and how, if new feature shows up, provide
references (dependencies, similar problems and solutions), etc.

Impact

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build process, hardware, documentation, security, compatibility, etc.

Testing

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what Host was used for build (OS, CPU, compiler, ..), what Target was
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and runtime logs from before and after change is highly appreciated.