Remove unused variable, and small typehint.

Signed-off-by: crynobone <crynobone@gmail.com>
Reorder some code.

Signed-off-by: crynobone <crynobone@gmail.com>
Add Orchestra\Foundation\Abstractable\RouteManager::is().

Signed-off-by: crynobone <crynobone@gmail.com>
Add Orchestra\Foundation\Abstractable\RouteManager::when() and fix some docblock.

Signed-off-by: crynobone <crynobone@gmail.com>