feat(types): deprecations and updated type names

[gpbl]

In this PR, I'm updating the types to make them more consistent to the next version of react-day-picker.

Breaking: Formatters

Formatters were not meant to return a ReactNode but a string. For React Nodes, a custom component should be used instead.

• Formatters: always return strings (39613f1)
• Note: this change may be reverted. Let see how other devs are reacting.

Breaking: Renamed Previous/Next Buttons label

These will require a test update.

• "Go to next month" has been renamed to "Next Month"
• "Go to previous month" has been renamed to "Previous Month"
• "Week n. ${week}" renamed to "Week ${week}"

Deprecated Types

The following types have been renamed. The old names have been deprecated in components/deprecated.ts and shouldn't be used anymore.

Deprecated Name	New Name	Commit
DaySelectionMode	Mode	53a1c6c
DayPickerDefaultProps	PropsDefault	81439e7
DayPickerSingleProps	PropsSingle	81439e7
DayPickerMultipleProps	PropsMulti	81439e7
DayPickerRangeProps	PropsRange	81439e7
WeekNumber	WeekNumberRowHeader	280f552
Row	WeekRow	aeff9ab
HeadRow	WeekdaysRow	b6302b1
Caption	MonthCaption	4d3e967
Month	MonthGrid	d2b962e
Root	Calendar	bf33538
RootProviderProps	ContextProvidersProps	d58410f
RootProvider	ContextProviders	f868d8a

Custom Components

Instead of adding manually the custom components, they are now exported in custom-components.ts. The type is now defined using the exports.

• CustomComponents: define type using exports (2bad3c3)