Add working with tables

[erik-wang-lancedb]

Migrated content over, writing all the code snippets into a python file.

Need to read over and make examples more human - current impl just ports it over for now.

[prrao87]

@erik-wang-lancedb I addressed the first issue in #10 in this PR. You can take the remaining items in that issue from here :).

However, the tests are failing on my end (test_tables.py isn't running for me 😅 )

examples/py/test_tables.py:30: UnboundLocalError
============================= short test summary info ==============================
FAILED examples/py/test_basic_usage.py::test_basic_usage - AssertionError: assert 3 == 4
FAILED examples/py/test_basic_usage.py::test_working_with_tables_async - NameError: name 'random' is not defined. Did you forget to import 'random'?
FAILED examples/py/test_tables.py::test_tables_basic_connect_snippet - UnboundLocalError: cannot access local variable 'lancedb' where it is not assoc...

[erik-wang-lancedb]

Will look into the remaining issues from #10!

The tests do work on my end, the error logs read like packages are not installed correctly perhaps?