Provide options from config file

[jonhattan]

I'm not clear why some settings are provided as options (cli arguments) and other ones as config (.phpqa.yml). I guess there're historical reasons.

It would be handy to allow providing options from config file, so all settings are self-contained.

[zdenekdrahos]

• CLI options configure used tools, common analyzed and ignored directories
• .phpqa.yml contains specific configuration for each tool.

I'd like to keep CLI options because:

I want to analyze selected directory without complex configuration and creating extra files/tasks
https://github.com/EdgedesignCZ/phpqa#why

I don't want to add more specific CLI options. That's configured in .phpqa.yml. I am not a fan of tool-specific CLI options, like in rclone.

[jonhattan]

I think I didn't explain it well - I'd like to pick options from a config file if not provided in cli (I think you understood the opposite).

My primary use case is to set the analyzed/ignored files in .phpqa.yml along with the extensions.

Here's a PR that works for me: #176