docs: Codebase structure

[felixwang9817]

Signed-off-by: Felix Wang [email protected]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

[codecov-commenter]

Codecov Report

Merging #3050 (34f91cc) into master (0ed1a63) will increase coverage by 8.27%. The diff coverage is n/a.

:exclamation: Current head 34f91cc differs from pull request most recent head c2ab2a6. Consider uploading reports for the commit c2ab2a6 to get more accurate results

@@            Coverage Diff             @@
##           master    #3050      +/-   ##
==========================================
+ Coverage   67.44%   75.72%   +8.27%     
==========================================
  Files         169      203      +34     
  Lines       14936    16856    +1920     
==========================================
+ Hits        10074    12764    +2690     
+ Misses       4862     4092     -770     

Flag	Coverage Δ
integrationtests	67.24% <ø> (-0.20%)	:arrow_down:
unittests	58.05% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...offline_stores/contrib/spark_repo_configuration.py	100.00% <0.00%> (ø)
.../contrib/athena_offline_store/tests/data_source.py	48.83% <0.00%> (ø)
...s/contrib/postgres_offline_store/tests/__init__.py	100.00% <0.00%> (ø)
.../online_stores/contrib/hbase_online_store/hbase.py	37.25% <0.00%> (ø)
.../contrib/postgres_offline_store/postgres_source.py	50.66% <0.00%> (ø)
...ontrib/postgres_offline_store/tests/data_source.py	51.02% <0.00%> (ø)
...s/contrib/trino_offline_store/connectors/upload.py	8.97% <0.00%> (ø)
sdk/python/feast/transformation_server.py	40.47% <0.00%> (ø)
...line_stores/contrib/athena_offline_store/athena.py	38.12% <0.00%> (ø)
...line_stores/contrib/postgres_repo_configuration.py	100.00% <0.00%> (ø)
... and 98 more

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[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: adchia, felixwang9817

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