NPU documentation and tools

root@Khadas:/npu/aml_npu_sdk/acuity-toolkit/conversion_scripts# ./0_import_model.sh
./0_import_model.sh: line 14: …/bin/convertensorflow: cannot execute binary file: Exec format error

root@Khadas:/npu/aml_npu_sdk/acuity-toolkit/conversion_scripts# file …/bin/convertensorflow
…/bin/convertensorflow: symbolic link to ./acuitylib/convertensorflow

root@Khadas:/npu/aml_npu_sdk/acuity-toolkit/conversion_scripts#