chore: fix Codespace COmposer/PHPUnit PATH

.devcontainer/postCreateCommand.sh

@@ -1,6 +1,9 @@
 #!/bin/sh
 
 export PATH="$PATH:$HOME/.composer/vendor/bin"
+export PATH="$PATH:$PWD/vendor/bin"
+echo 'export PATH="$PATH:$HOME/.composer/vendor/bin"' >> ~/.bashrc
+echo 'export PATH="$PATH:$PWD/vendor/bin"' >> ~/.bashrc
 ln -s ./conf.sample.php cfg/conf.php
 composer install --no-dev --optimize-autoloader