Add Contains Ignore Case option to Seek Row functionality

[mofojed]

We currently have Seek Row functionality in grids for searching for text within a column. There are only a few options there, we should add the Contains Ignore Case option as well.

Context: https://illumon.slack.com/archives/CAUG7MC2D/p1683398883944149

[dsmmcken]

These should use human labels -- "Equals (ignore case)" or whatever we've done elsewhere.

[mofojed]

@ethanalvizo you can create a table with a string column to test this feature. From our docs (https://deephaven.io/core/docs/reference/table-operations/create/stringCol/):

from deephaven import new_table
from deephaven.column import string_col

result = new_table([
    string_col("x", ["Deephaven", "DEEPHAVEN", "deephaven", "illumon", "ILLUMON"])
])

Then in the table that appears, open the table sidebar and click the "Go to" option to display the Go to feature: