Storing Attribute Types in _type_attributes

[Pushkar-Bhuse]

This PR fixes #835.

Description of changes

This PR introduces a new structure of _type_attributes of Data Store. The _type_attributes now store the type values of individual attributes of each entry in a Data Store. For example:

DataStore._type_attributes = {
"ft.onto.base_ontology.Document": {
                "attributes": {
                    "document_class": {"index": 4, "type": (list, (str,))},
                    "sentiment": {"index": 5, "type": (dict, (str, float))},
                    "classifications": {
                        "index": 6,
                        "type": (FDict, (str, Classification)),
                    },
                },
                "parent_class": set(),
            },
}

Possible influences of this PR.

Through this PR, getter methods of dataclass attributes could be more comprehensive and return values based on their respective types. This is particularly useful in the case where attributes of type Entry are only stored through their tid. Through this PR, it can be easy to distinguish these attributes from the ones stored as int.

Test Conducted

The tests were conducted on data_store_test, data_pack_test, data_store_serialization

[codecov]

Codecov Report

Merging #886 (7172ce2) into master (8a61272) will increase coverage by 0.02%.
The diff coverage is 95.04%.

@@            Coverage Diff             @@
##           master     #886      +/-   ##
==========================================
+ Coverage   80.85%   80.88%   +0.02%     
==========================================
  Files         254      254              
  Lines       19460    19525      +65     
==========================================
+ Hits        15734    15792      +58     
- Misses       3726     3733       +7     

Impacted Files	Coverage Δ
forte/data/ontology/top.py	78.09% <88.88%> (+0.21%)	⬆️
forte/data/data_store.py	93.30% <93.22%> (-0.21%)	⬇️
forte/common/constants.py	100.00% <100.00%> (ø)
forte/data/base_pack.py	75.65% <100.00%> (-0.51%)	⬇️
forte/data/ontology/code_generation_objects.py	92.29% <100.00%> (ø)
forte/data/ontology/core.py	76.86% <100.00%> (+0.08%)	⬆️
forte/data/ontology/ontology_code_generator.py	90.11% <100.00%> (+0.02%)	⬆️
tests/forte/data/data_store_serialization_test.py	98.30% <100.00%> (+0.09%)	⬆️
tests/forte/data/data_store_test.py	95.50% <100.00%> (+0.02%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[hunterhector]

In the future, for this type of more complex PR's , the better idea is to split out small steps and tackle them each one separately.