minor #624 Add void return type to initialize methods in store commands (OskarStark)

This PR was merged into the main branch.

Discussion
----------

 Add `void` return type to `initialize` methods in store commands

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Docs?         | no
| Issues        | --
| License       | MIT

Commits
-------

d18ce53 Add void return type to initialize methods in store commands

Author: OskarStark

src/store/src/Command/DropStoreCommand.php

@@ -64,7 +64,7 @@ protected function configure(): void
         ;
     }
 
-    protected function initialize(InputInterface $input, OutputInterface $output)
+    protected function initialize(InputInterface $input, OutputInterface $output): void
     {
         $storeName = $input->getArgument('store');
         if (!$this->stores->has($storeName)) {

src/store/src/Command/SetupStoreCommand.php

@@ -62,7 +62,7 @@ protected function configure(): void
         ;
     }
 
-    protected function initialize(InputInterface $input, OutputInterface $output)
+    protected function initialize(InputInterface $input, OutputInterface $output): void
     {
         $storeName = $input->getArgument('store');
         if (!$this->stores->has($storeName)) {