feat: improve big-endian support

[ikrommyd]

Attempt to make all (or almost all) tests pass on big-endian file systems

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.66%. Comparing base (b749e49) to head (38ccb4b).
⚠️ Report is 436 commits behind head on main.

Additional details and impacted files

Files with missing lines	Coverage Δ
src/awkward/_do.py	84.14% <ø> (+0.71%)	⬆️
src/awkward/_pickle.py	79.31% <100.00%> (-8.00%)	⬇️
src/awkward/contents/numpyarray.py	91.38% <100.00%> (-0.13%)	⬇️
src/awkward/highlevel.py	78.44% <ø> (+1.77%)	⬆️
src/awkward/operations/ak_from_buffers.py	92.66% <100.00%> (-1.46%)	⬇️

... and 192 files with indirect coverage changes

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[github-actions]

The documentation preview is ready to be viewed at http://preview.awkward-array.org.s3-website.us-east-1.amazonaws.com/PR3676

[ikrommyd]

FAILED tests/test_1345_avro_reader.py::test_bytes - ValueError: buffer source array is read-only
FAILED tests/test_1345_avro_reader.py::test_string - ValueError: buffer source array is read-only
FAILED tests/test_1345_avro_reader.py::test_fixed - ValueError: buffer source array is read-only
FAILED tests/test_1345_avro_reader.py::test_arrays_int - ValueError: buffer source array is read-only
FAILED tests/test_1345_avro_reader.py::test_array_string - ValueError: buffer source array is read-only
FAILED tests/test_1345_avro_reader.py::test_Unions_string_null - ValueError: buffer source array is read-only
FAILED tests/test_1345_avro_reader.py::test_Unions_null_X_Y - ValueError: buffer source array is read-only
FAILED tests/test_3209_awkwardforth_read_negative_number_of_items.py::test_read_negative_and_positive_number_of_items - assert [0, 0, 0, 0, 0] == [1, 2, 3, 4, 5]
FAILED tests/test_3209_awkwardforth_read_negative_number_of_items.py::test_read_positive_and_negative_number_of_items - assert [0, 0, 0, 0, 0] == [1, 2, 3, 4, 5]
===================================================================================== 9 failed, 2925 passed, 161 skipped in 265.36s (0:04:25) =====================================================================================

Here is the situation with this PR. I did not install anything extra like pyarrow, numba etc because compiling everything from source can be very annoying so many tests are not being run but you can see that this is looking very good and only these awkward forth and avro tests are failing.