Merge pull request #25 from superrosko/feature/psalm-integration

feat: add Psalm integration

Author: weierophinney

.gitignore

@@ -4,4 +4,3 @@
 /phpunit.xml
 /vendor/
 /.phpunit.result.cache
-/.phpcs-cache

composer.json

@@ -50,7 +50,9 @@
         "laminas/laminas-validator": "^2.8.1",
         "laminas/laminas-view": "^2.11.3",
         "phpspec/prophecy-phpunit": "^2.0",
-        "phpunit/phpunit": "^9.5.10"
+        "phpunit/phpunit": "^9.5.10",
+        "psalm/plugin-phpunit": "^0.16.1",
+        "vimeo/psalm": "^4.7"
     },
     "autoload": {
         "psr-4": {
@@ -69,6 +71,7 @@
         ],
         "cs-check": "phpcs",
         "cs-fix": "phpcbf",
+        "static-analysis": "psalm --shepherd --stats",
         "test": "phpunit --colors=always",
         "test-coverage": "phpunit --colors=always --coverage-clover clover.xml"
     },