ARROW-11417: Add integration files for buffer compression (#56)

The files were generated using PyArrow 2.0.0.
Then they had to be edited by hand to make them compatible with the Java JSON reader (because of ARROW-11483).
6 files changed
tree: 4ef31931ad61f9ba9e303291ea80f2caecc36883
  1. data/
  2. LICENSE.txt
  3. README.md
README.md