Add support for Laravel Sail

[jonsugar]

See the Laravel Sail documentation.

Examples (exact syntax TBD):

# scaffold a new Laravel app using Sail defaults:
#   mysql, redis, meilisearch, mailhog, and selenium
lambo new my-app --sail

# scaffold a new Laravel app using chosen services only:
lambo new my-app --sail=mysql,redis

Things to consider:

• valet options should be ignored and/or a warning provided if used in conjunction with Sail.
• the application must be started, cd example-app followed by ./vendor/bin/sail up, before it will be accessible in the automatically opened browser window.