Improve console messages on add and update config files

[vjik]

Q	A
Is bugfix?	❌
New feature?	✔️
Breaks BC?	❌
Fixed issues	#13 #19

Example:

Config files has been added:
 - config/packages/test/k/config/params.php
 - config/packages/test/k/config/common.php

Config files has been changed:
 - config/packages/test/a/config/params.php
 - config/packages/test/a/config/web.php
Please review files above and change it according with .dist files.

Message about new config files output also on first install.

[samdark]

👍