[New] {DateRangePicker,SingleDatePicker}{,Input,InputController}: add title text props

[vastolf]

This PR was created to solve #1861 & it has Full Storybook Documentation & Tests

This enables react-dates users to add title attributes to the Start/End date fields, as well as the Single Date Picker date field.

[vastolf]

@majapw and @caseklim Sure you guys are super busy, but I wanted to surface this again as it has already been reviewed by @backwardok and @ljharb and just requires both of your approvals to be mergeable.

Please let me know if there's anything I'm missing here, will be happy to make any updates that may be needed to get this merged. Thanks :)

[vastolf]

@majapw and @caseklim hoping to get this reviewed if possible! Can imagine you're very busy but wanted to surface this again as it's been a couple months

[backwardok]

Hey @nkinser ! Do you think you could do a review of this and approve if it looks good?

[vastolf]

@nkinser would love to get this approved/updated if it has any problems, when you get a chance! Really looking forward to using this functionality in our implementation :)

[vastolf]

@nkinser @backwardok is there anything I can do to help get this ready to be merged? I have full Storybook Documentation and Tests included in this PR :) I've also just pulled master into it and it looks like the tests are still passing (and after over 9 months! lucky me :))

Thank you for your time, I am sure you are extremely busy <3

[backwardok]

Sorry for the delay - went on vacation last week! I think we should be ok to move forward. @ljharb do you want to merge this?

[farideliyev]

@ljharb, it seems this feature was not released

[ljharb]

@farideliyev correct, there hasn't been a release in awhile. it will be included in the next release, which has no planned date but will hopefully be soon.