feat: add ability to set IDE url template

[butschster]

By default is used template for PHPStorm

The phpstorm option is supported natively by PhpStorm on macOS and Windows; Linux requires installing phpstorm-url-handler.

IDE_URL_TEMPLATE=phpstorm://open?url=file://${file}&line=${line}

If you use another editor, the expected configuration value is a URL template that contains an ${file} placeholder where the file path is expected and ${line} placeholder for the line number.

Env variable can be set into the Buggregator Docker container like this:

buggregator-server:
  ...
  environment:
    IDE_URL_TEMPLATE: phpstorm://open?url=file://${file}&line=${line}