Add future date range presets

[ganyicz]

The scenario

Scheduling and booking applications need future date range presets (Tomorrow, Next Week, Next 30 Days, etc.) in the date picker.

The problem

The DateRangePreset enum only includes past and present presets (Yesterday, Last 7 Days, Last Month, etc.) and there's no built-in way to select future date ranges.

Requested in #1165.

The solution

Add 10 future date range presets that mirror the existing past-facing ones:

New Preset	Mirror of
tomorrow	yesterday
nextWeek	lastWeek
next7Days	last7Days
nextMonth	lastMonth
nextQuarter	lastQuarter
nextYear	lastYear
next14Days	last14Days
next30Days	last30Days
next3Months	last3Months
next6Months	last6Months

<flux:date-picker mode="range" presets="today tomorrow nextWeek next30Days" />

$this->range = DateRange::tomorrow();
$this->range = DateRange::next30Days();

Flux Pro: livewire/flux-pro#438
Flux Docs: livewire/flux-docs#148

Fixes #2343 #1156