[Issue 17199] std.string: add case handling methods (camelCase, Capitalize, kebab-case, snake_case, lowerFirst, startCase)

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=17199

--- Comment #1 from dlangBugzillaToGithub <robert.schadek at posteo.de> ---
THIS ISSUE HAS BEEN MOVED TO GITHUB

https://github.com/dlang/phobos/issues/10235

DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO
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