feat(api): add StringValue.as_time for parsing strings into times

[saschahofmann]

Description of changes

• Adding as_time method that converts string to TimeValue based on a formatted. By default converts to timestamps and casts to time
• Implements parse_time for BigQuery and to_date for Snowflake
• Is it necessary to implement the pyspark_format tests as well, I had the impression that its mostly about dates?

Issues closed

• Closes feat: Add to_date and to_time to StringValue #8908

Note

I find it kinda tricky to setup the tests/dev environment e.g. the docker postgres database always collides with my own local postgres so I have to shut it down in order to run the tests. There are also a lot of errors in the VSCode test discovery, I think its because of the two environments with and without Flink on Mac.

For pyspark I am getting this

pyspark.errors.exceptions.base.PySparkRuntimeError: [JAVA_GATEWAY_EXITED] Java gateway process exited before sending its port number.

For duckdb

duckdb.duckdb.IOException: IO Error: No files found that match the pattern "ibis/ci/ibis-testing-data/parquet/geo_wkb.parquet"

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[saschahofmann]

@deepyaman I finally got around to it and didn't find too many databases with their own implementation so it was quite straightforward