DateTime Options migration

[sffc]

1317

Removes the old options from datetime::options and moves the new options from datetime::neo_skeleton to datetime::options.

There is one change I am unsure about. Please take note of datetime::options::components moving to provider, despite it being returned by a pub fn in DateTimePattern.

Depends on #5807 Depends on #5814 Depends on #5817

[dpulls[bot]]

:tada: All dependencies have been resolved !

[dpulls[bot]]

:tada: All dependencies have been resolved !

[sffc]

There is one change I am unsure about. Please take note of datetime::options::components moving to provider, despite it being returned by a pub fn in DateTimePattern.

Working group discussion:

• @sffc You have to use a type from the provider module to get resolved components with my new PR. Is this OK? Since it is in provider, it is unstable, and we could change it later if needed.
• @nekevss Name the type or the fields DateTimePartial?

Conclusion: OK to put it in the provider module for now in 2.0