Add tensorflow-lite recipe #1319
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This recipe needs a better place, but, for now, put it in meta-qcom.
Tflite supports 2 buildsystems: bazel and cmake, the IMSDK recipes use cmake but only support up to 2.16.x and the Windriver recipes use bazel, but only support up to 2.19.x. Tflite 2.20 needs a more recent bazel version, which in turns needs a more recent JDK. Neither the meta-java recipes nor the meta-aws prebuilts work, so we're stuck with cmake.
Since cmake is in OE-core and we don't care about the non-lite tensorflow, the only dependency left is a specific flatbuffers release.
This was only build tested during the San Diego sprint.