Clickhouse-connect

Bug Fix
- Fixed an issue with the automatic retry of "connection reset errors". This should prevent exceptions when the
ClickHouse server closes a Keep Alive connection while a new request is in flight.

Improvement
- Improved support for typing tools by adding a `py.typed` file. Thanks to [Avery Fischer](https://github.com/biggerfisch)
for the contribution.

Bug Fix
- Nested empty Maps would return an IndexError when queried. https://github.com/ClickHouse/clickhouse-connect/issues/239. Thanks
to [Ashton Hudson](https://github.com/CaptainCuddleCube) for the report and the fix

Bug fixes
- Inserts using Pandas 2.1 would fail due to a removed method in the Pandas library. There is now a workaround/fix for
this. Closes https://github.com/ClickHouse/clickhouse-connect/issues/234
- Inserts into a FixedString column that were not the expected size could cause corrupt insert blocks and mysterious errors
from the ClickHouse server. Validation has been added so that more meaningful error messages are generated if a fixed string
value is an invalid size. A reminder that strings which are "too short" for a FixedString column will be padded with 0 bytes, while
strings that are "too long" will generate an exception during the insert.

Improvement
- Add support and tests for the `Object(Nullable('json'))` type, which is sometimes detected by schema inference.

Improvements
- Logging and exception handling for failed insert transformations has been reworked. If an exception is thrown when attempting to
convert Python, Pandas, or Numpy data into ClickHouse Native format, the column name and type will be logged, as well as a
stack trace of actual exception (note this may be in the C/Cython code, so the exception data may still be difficult to interpret).
This partially addresses https://github.com/ClickHouse/clickhouse-connect/issues/229. Unfortunately determining data errors on a row level in
addition to the column level is not practical in most cases without seriously impacting performance.
- Version information has been moved from a top level `VERSION` to a Python `__version__` file in the package. This removes the Python 3.7 dependency
on importlib_metadata.
- Cython `.pyx`, and `.pxd` files are now included in the PyPI source distribution to improve compatibility with 3rd party build tools.

Bug Fix
- Fixed client `raw_insert` method when a compression method specified. https://github.com/ClickHouse/clickhouse-connect/issues/223

Improvement
- Add compression parameter to the clickhouse `tools.insert_file` method. '.gz' and '.gzip' extensions are automatically
recognized.