feat: native Title Case string operation to Ibis

[luca-ferreri]

Is your feature request related to a problem?

I'm used to the python title method!

What is the motivation behind your request?

Capitalize method is not always sufficient, it only capitalize the first chart of the string, however sometimes you need to capitalize each word of the string.

Describe the solution you'd like

_['str_col'].title()

What version of ibis are you running?

9.5.0

What backend(s) are you using, if any?

DuckDB

Code of Conduct

• I agree to follow this project's Code of Conduct

[luca-ferreri]

current workaround:

str_col=_["str_col"].split(" ").map(lambda w: w.capitalize()).join(" ")