[Android NNAPI EP] change most of the exceptions to return Status

[guoyu-wang]

Description: change most of the exceptions in NNAPI EP to return Status

Motivation and Context

• Using return Status may potentially reduce the binary size of the package
• If we choose to not use exception for Android (to reduce binary size), return Status will give app a way of exit gracefully
• In case of an NNAPI EP execution failure (rarely)m, ORT may be able to fall back to CPU

[skottmckay]

Is there a compile option that checks for unused return values to make sure there's nowhere we're accidentally ignoring one? #Resolved

[skottmckay]

[guoyu-wang]

Seems the -Wunused-result option is by default on, seems it will not work for non-POD type, here is the gcc bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38172
Unless we bump to c++17 and use [[nodiscard]] attribute

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In reply to: 668400618 [](ancestors = 668400618)

[guoyu-wang]

Actually I found we have ORT_MUST_USE_RESULT to check if the return Status is used, added it in the latest iter

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In reply to: 668783113 [](ancestors = 668783113,668400618)

[skottmckay]