Case-insensitive pattern type

[ljacqu]

Extend RegexType to have a second instance out of the box that is a case-insensitive pattern. See how StringType does it similarly for the lowercase String.

To do

• Extract the pattern compilation into a separated protected method (similar to StringType#transformToString)
• Add a second constant to RegexType that will create a pattern with Pattern.compile(string, Pattern.CASE_INSENSITIVE)
• Extend tests

[shirsho-roy]

@ljacqu I would like to work on this issue. Please assign it to me

[ljacqu]

Hi @shirsho-roy , looks like sharief beat you to it 😅 Please see any other good-first-issue labels if anything catches your fancy! Thanks