add gitlab-ci configuration

.gitlab-ci.yml

+stages:
+  - test
+  - publish
+
+phpunit:
+  stage: test
+  needs: []
+  parallel:
+    matrix:
+      - PHP_VERSION: [7.4, 8.0, 8.1, 8.2]
+  image: iras/php-composer:${PHP_VERSION}
+  before_script:
+    - composer install
+  script:
+    - bin/phpunit --coverage-text
+
+packagist:
+  stage: publish
+  needs: [phpunit]
+  image: alpine/3.18
+  before_script:
+    - apk add --no-cache curl
+  script:
+    - |
+      curl -XPOST -H'content-type:application/json' 
+        'https://packagist.org/api/update-package?username=tflori&apiToken='${PACKAGIST_API_TOKEN} 
+         -d'{"repository":{"url":"riki/quickstart"}}

composer.json

 {
     "name": "riki/quickstart",
-    "description": "",
+    "description": "quickstart for a php application using riki-framework",
     "type": "project",
     "license": "MIT",
-    "minimum-stability": "rc",
+    "minimum-stability": "RC",
     "config": {
         "bin-dir": "bin"
     },
@@ -38,7 +38,11 @@
     },
     "scripts": {
         "start": "php -S localhost:8080 -t public public/routing.php",
-        "cli": "quickstart",
         "test": "phpunit"
+    },
+    "archive": {
+        "exclude": [
+            ".gitlab-ci.yml"
+        ]
     }
 }