Save table prediction in cells format

[plutasnyy]

This pull request allows to return predictions in raw cell representation from table transformer. It will be later used in unstructured repository to save prediction in a cells format for simpler metrics calculation

[badGarnet]

• please add a test
• and bump version

[plutasnyy]

For the unit tests:

• The 'cells' type was previously tested in this function https://github.com/Unstructured-IO/unstructured-inference/pull/335/files#diff-56b4d700e2ed72befcaf37f68f915270aacece7bfdba7ce12906bf8d6efcf485R926
• I have added unit test for raising error when the type is wrong

Bumping version:

• Last released version is 0.7.25, the change-log was edited for 0.7.26. Is there any script to bump version you referring to? How can I bump version?

Not passing test_ingest:

• @badGarnet could you guide me how to debug this problem? I looked into logs and I do not see any stacktrace and errors

[badGarnet]

For the unit tests:

• The 'cells' type was previously tested in this function https://github.com/Unstructured-IO/unstructured-inference/pull/335/files#diff-56b4d700e2ed72befcaf37f68f915270aacece7bfdba7ce12906bf8d6efcf485R926
• I have added unit test for raising error when the type is wrong

Bumping version:

• Last released version is 0.7.25, the change-log was edited for 0.7.26. Is there any script to bump version you referring to? How can I bump version?

Not passing test_ingest:

• @badGarnet could you guide me how to debug this problem? I looked into logs and I do not see any stacktrace and errors

the version bump is just edit both the CHANGLOG.md and unstructured_inference/__version__.py to match. We could add a ci lint check to ensure those two are consistent.

The ingest test failing can be ignored for now (it is not required anyway); we should take a look and maybe remove this step as it has been out of date for a while.

[plutasnyy]

The version in __version__ file is also one number higher than last released version, so I assume it should be correct?

Files for reference:
https://github.com/Unstructured-IO/unstructured-inference/blob/feat/table-as-cells/unstructured_inference/__version__.py
https://github.com/Unstructured-IO/unstructured-inference/blob/feat/table-as-cells/CHANGELOG.md