Add github action composer-require-checker. (#421)

* Add github action composer-require-checker.

.github/workflows/composer-require-checker.yml

@@ -0,0 +1,33 @@
+on:
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'CHANGELOG.md'
+      - '.gitignore'
+      - '.gitattributes'
+      - 'infection.json.dist'
+      - 'phpunit.xml.dist'
+      - 'psalm.xml'
+
+  push:
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'CHANGELOG.md'
+      - '.gitignore'
+      - '.gitattributes'
+      - 'infection.json.dist'
+      - 'phpunit.xml.dist'
+      - 'psalm.xml'
+
+name: Composer require checker
+
+jobs:
+  composer-require-checker:
+    uses: yiisoft/actions/.github/workflows/composer-require-checker.yml@master
+    with:
+      os: >-
+        ['ubuntu-latest']
+      php: >-
+        ['8.0', '8.1']

composer.json

@@ -20,6 +20,7 @@
     "prefer-stable": true,
     "require": {
         "php": "^8.0",
+        "ext-ctype": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
         "ext-pdo": "*",
@@ -31,6 +32,7 @@
         "yiisoft/strings": "^2.0"
     },
     "require-dev": {
+        "maglnet/composer-require-checker": "^4.2",
         "phpunit/phpunit": "^9.5",
         "rector/rector": "^0.14",
         "roave/infection-static-analysis-plugin": "^1.16",