Track groundtruth with Git LFS

updated the regression data for the new clipping

updated the fillable_form.pdf.page_no_1.py.json

updated the groundtruth regression

added new regression documents for math

adding latex_formulas regression test

added the regression tests for the parse

updated the jpg handling

updated the regression test and groundtruth_rendering

updated the README

feat: updated the ground-truth and regression test cases

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