adds nk_tooltip_text

[Hejsil]

For when you have a string that is not \0 terminated

[dumblob]

Hi, thanks for the proposal. To make this change happen, it would be wise to change (not add new API calls) the whole library to not use any null-terminated strings. For this reason I'm currently a bit reluctant to approve this PR. Would you be willing to make such an important step to happen?

[Hejsil]

Hmm, idk if I'd want to put the time in make such a change. Though, I do mostly work with none null-terminated strings so I might end up needing to do this.

Would this involve removing APIs like nk_label and only having nk_text?

[dumblob]

Would this involve removing APIs like nk_label and only having nk_text?

In this case yes as the only motivation to have nk_label was to support null-terminated strings 😉 (back when Nuklear wasn't versioned and also when it became freshly versioned, it was needed to maintain backwards compatibility, but nowadays it's not such a big issue due to strict versioning).

[Hejsil]

Closing this in favor of having this as an issue (#905)