`maximize_csv_field_size_limit()` utility function

[simonw]

This code here runs only if cli.py is imported:

sqlite-utils/sqlite_utils/cli.py

Lines 50 to 59 in 7ddf530

	# Increase CSV field size limit to maximum possible
	# https://stackoverflow.com/a/15063941
	field_size_limit = sys.maxsize
	while True:
	try:
	csv_std.field_size_limit(field_size_limit)
	break
	except OverflowError:
	field_size_limit = int(field_size_limit / 10)

I found myself needing the same fix in another library:

• Error: field larger than field limit datasette-socrata#13

It should be a documented utility function.

[simonw]

Here's the commit where I added that originally, including a test: 1a93b72

[simonw]

Documentation: https://sqlite-utils.datasette.io/en/latest/python-api.html#setting-the-maximum-csv-field-size-limit