[Proposal] Add twiceMonthly($first, $second) & endOfMonth() to scheduler.

[coderabbi]

Pretty self-explanatory, the proposed additions are to framework/src/Illuminate/Console/Scheduling/ManagesFrequencies.php to conveniently accommodate two very common use cases for scheduled tasks: twice a month, and end of month.

Precedent exists for twiceMonthly($first, $second) as twiceDaily() already exists, even though it, too, could be accommodated via method chaining.

A related interesting possibility would be to add the ability to specify "end" as a parameter in twiceMonthy($first, $second) and the exiting monthlyOn($day, $time);

I'm open to submitting a PR, just wanted to measure interest, gather feedback first.

[decadence]

How do you plan implement "end of month"? CRON doesn't support that.
One option is use when callback but seems like none of rules uses it internally.

[coderabbi]

Indeed, I'd use when() which is used internally already by between($startTime, $endTime).

[coderabbi]

While on the subject, endOfQuarter() & startOfQuarter() are also common use cases, but let's start with months... 😄

[coderabbi]

endOfMonth(): laravel/framework#19870

[coderabbi]

twiceMonthly(): laravel/framework#19874

[coderabbi]

Going to wait on the reaction to those and feedback here before implementing "end" parameter for twiceMonthly() and monthlyOn().