deployphp / deployer

* [#2187] Type declarations in src/Collection

Added type declarations for methods in `src/Collection`

* [#2187] Missing type declaration in src/Configuration

Added missing type declaration is `src/Configuration/Configuration.php`

* [#2187] Removed unnecessary return in \Deployer\Collection\Collection::get

Removed the return which would result in returning void in the
\Deployer\Collection\Collection::get method

Updated phpdoc to reflect this change

* [#2197] Removed "@phpcsSuppress" annotations from \Deployer\Collection\Collection

Co-authored-by: Bartlomiej Sacharski <beton@cementowina.org>