Support for `capitalCase`

[TiBianMod]

nice to have:

capitalCase("hello world")
// output: Hello World

es-toolkit already supports some *case. not the same as capitalize

[joris-gallot]

I think you can use startCase

[hisham]

startCase removes special characters, which is not desired in this scenario - see https://github.com/lodash/lodash/issues/3383 for discussion on this.