Provide support for PHP

[msankhala]

I really like the capabilities of sidekick to allow us to put tracepoint and log point in production applications without requiring redeployment. The only thing I miss is that sidekick isn't available for PHP.

PHP is the most used server-side programming language on the web. In fact, 79.2% of all websites rely on PHP to some degree, making it one of the most popular languages among programmers and web developers due to its widespread use.

Source: https://kinsta.com/php-market-share/

PHP can run in different mods.

1. Cli mode
2. On servers
   1. Apache + mod_php
   2. Apache + php-fpm
   3. nginx + php-frpm

Few references for comparison: https://stackoverflow.com/questions/29403998/is-nginx-php-fpm-is-suppose-be-much-faster-than-apache-mod-php https://serverfault.com/questions/174008/comparing-nginxphp-fpm-to-apache-mod-php

I would really like to see sidekick being available for PHP both in CLI mode and in Server mode.