Add PHPStan checks to CI

Jenkinsfile

@@ -9,20 +9,6 @@ pipeline {
 				sh 'php composer.phar install --ignore-platform-reqs'
 			}
 		}
-		stage("Test PHP 7.4") {
-			steps {
-				script {
-					docker.image("memcached:latest").withRun("-p 11212:11211") { c ->
-						docker.image("redis:latest").withRun("-p 6380:6379") { d ->
-							docker.image("php:7.4").withRun("-e REDIS_HOST=redis -e REDIS_PORT=11212 -e MEMCACHED_HOST=mem -e MEMCACHED_PORT=6380 --link ${d.id}:redis --link ${c.id}:mem") { p ->
-								sh "sh build/docker_install.sh"
-								sh "php ./vendor/bin/phpunit -c build --no-coverage --colors=never"
-							}
-						}
-					}
-				}
-			}
-		}
 		stage("Test PHP 8") {
 			steps {
 				script {
@@ -37,6 +23,16 @@ pipeline {
 				}
 			}
 		}
+		stage('Code Cleanliness') {
+			agent any
+			steps {
+				sh "php ./vendor/bin/phpstan analyse -c phpstan.neon -n --no-progress --no-ansi --error-format=checkstyle | awk '{\$1=\$1;print}' > build/logs/phpstan.log"
+				recordIssues(
+					failOnError: false,
+					tools: [phpStan(reportEncoding: 'UTF-8', pattern: 'build/logs/phpstan.log')]
+				)
+			}
+		}
 	}
 	post {
 		success {

phpstan.neon

@@ -0,0 +1,13 @@
+parameters:
+	checkGenericClassInNonGenericObjectType: false
+	checkMissingIterableValueType: false
+	inferPrivatePropertyTypeFromConstructor: true
+	level: 8
+	paths:
+		- src
+	excludes_analyse:
+		- tests
+		- vendor
+	# These are objects that basically can return anything
+	universalObjectCratesClasses:
+		- Aviat\Ion\Friend