Change access log filenames to domain name (or add option)

Is your feature request related to a problem? Please describe.
It's very frustrating to try and determine which log file is for which site since they are all named after the arbitrary ID that they are assigned when created.

Describe the solution you'd like
It would be nice to instead have them named after the first domain in the domain_names list.

~BEFORE~
# ls
proxy_host-1.log  proxy_host-10.log  proxy_host-11.log	proxy_host-2.log  proxy_host-3.log  proxy_host-4.log  proxy_host-5.log	proxy_host-6.log  proxy_host-7.log  proxy_host-8.log  proxy_host-9.log

~AFTER~
# ls
domain.example.com.log fqdn.something.log ...

Using the template on how the domain names are set for server_name, I assume this can be accomplished by simply changing the access log line to something like this (proxy host as the example):

access_log /data/logs/{{ domain_names[0] }}.log proxy;
OR
access_log /data/logs/{{ domain_names | first }}.log proxy;

Describe alternatives you've considered
I tried to just add a custom access_log line to the advanced configuration, but instead of overwriting the previous setting it sends logs to both files.

Additional context
N/A

Start with backend/templates/_listen.conf at the server_name template referenced in the issue, then locate the access_log directives for proxy hosts. Check how the generated configuration derives log filenames and whether custom advanced configuration causes duplicate logging. Done means access logs use the first domain name, or a documented option, without retaining unintended duplicate output.