samples for CharSequence.toContain...regex/matchFor

[robstoll]

Code related feature

Following the things you need to do:

api-fluent

• add a regex method in CharSequenceToContainCreatorsSamples for toContain...regex("a", "b")
• add a regexIgnoringCase method in CharSequenceToContainCreatorsSamples for toContain.ignoringCase.regex("a", "b")
• add a regexIgnoringCaseWithChecker method in CharSequenceToContainCreatorsSamples for toContain.ignoringCase...regex("a", "b")
• add a matchFor method in CharSequenceToContainCreatorsSamples for toContain...regex(Regex("a"), Regex("b"))
• link in the KDoc of the corresponding functions in charSequenceToContainCreators.kt to the sample via @sample (see function value in this file)

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[Nikos-Tsiougranas]

I will work on this!