Laravel 5.x - 9.x, Amazon Linux 2 support

Modified to support Amazon Linux 2 and ending support for Amazon Linux 1.
Amazon Linux 1 is unsupported, it is advised to migrate to use Amazon Linux 2.
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.migration-al.html
Also modified to support up to Laravel 9.x.

v0.3.1

Add missing space in queueVal falsy statement

v0.3

• queue param is now optional, closes #3
• Correct user for executing a program
• Supply environmental variables to supervisor program correctly
• Grace period on update to ensure supervisord has stopped before starting again

v0.2.1

Add delay parameter to artisan queue:work

Allows setting --delay= from environmental variables

v0.2

• Environmental variables are now case-insensitive
• User can supply their own supervisord.conf by specifying in config file

v0.1

Initial release