[ETConverter] Update text converter to new schema

[changhai0109]

Summary

Update text converter to use v0.0.4 schema

Test Plan

# Assuming there is a astrasim text input file, like [astrasim]/inputs/workload/ASTRA-sim-1.0/Resnet50_DataParallel.txt
python -m chakra.et_converter.et_converter \
    --input_type Text \
    --input_filename ${ASTRASIM_DIR}/inputs/workload/ASTRA-sim-1.0/Resnet50_DataParallel.txt \
    --output_filename Resnet50_DataParallel \
    --num_dims 1 \
    --num_npus 64 \
    --num_passes 1

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