support shopware6 version and base urls

[danslo]

• Moved composer logic to separate file, so it can be reused for Shopware.
• Removed support for determining versions by git clones (very rare, and complicates abstraction).
• Deduplicate store roots in DiscoverStores, this was detecting 3 Shopware instances in /var/www/html. I suspect this might currently cause confusion in ecomscan interactive as well.
• Implement sw6 Version and BaseURLs methods.

Result:

www-data@sw6prod-php-fpm:/var/www/html$ ./find 
Found 1 stores
Shopware 6 (ver: 6.6.9.0) at /var/www/html
DBC: &{Host:mysql User:app Pass:app Name:shopware Prefix: Port:3306}
Base URLs:
- http://127.0.0.1:8000

Previously:

Found 3 stores
Shopware 6 (ver: 6.6.9.0) at /var/www/html
DBC: &{Host:mysql User:app Pass:app Name:shopware Prefix: Port:3306}
Base URLs:
- http://127.0.0.1:8000

Shopware 6 (ver: 6.6.9.0) at /var/www/html
DBC: &{Host:mysql User:app Pass:app Name:shopware Prefix: Port:3306}
Base URLs:
- http://127.0.0.1:8000

Shopware 6 (ver: 6.6.9.0) at /var/www/html
DBC: &{Host:mysql User:app Pass:app Name:shopware Prefix: Port:3306}
Base URLs:
- http://127.0.0.1:8000

[danslo]

Checking tests :)

[gwillem]

🤩