cherry-pick tflite-micro from 2023-02-27 to 2023-05-13

tflite-micro cherry-pick info:

start commit id: 48b6cffeb2c6f07b887e227f57de00da7783d736
end commit id: d5f70ceb5202f72efc856901c3418fff92b76f9e

Since e344f4b6bbc1a3d6a62fd31555ba6715a4504c1e add new feature and
remove "tensorflow/lite/micro/all_ops_resolver.h" caused compile error,
this commit cherry-pick end at d5f70ceb5202f72efc856901c3418fff92b76f9e
of tflite-micro.

Sync from tflite-micro.

cherry-pick from: tensorflow#185

This PR was the last PR for sync from tflite-micro to
tflite-micro-arduino-examples offically. Then the auto-sync robot was
suspended, and the tflite-micro-arduino-examples (a.k.a tflite-micro for
Arduino) was no more maintained from Google officially.

This commit has verified on RTduino STM32F412 Nucleo board by the
demo of Hello World sine wave.

Reference: tensorflow/tflite-micro#2229

[example][hello world] update readme