MAPG-199 add static code analysis step to pipeline

bitbucket-pipelines.yml

@@ -13,3 +13,12 @@ pipelines:
                   - curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
                   - composer install
                   - vendor/bin/phpunit --log-junit unit_test_results.xml --testdox tests
+        - step:
+              name: Static Code Analysis
+              caches:
+                  - composer
+              script:
+                  - apt-get update && apt-get install -y unzip
+                  - curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+                  - composer install
+                  - vendor/bin/phpstan analyse -c phpstan.neon

phpstan.neon

@@ -0,0 +1,9 @@
+parameters:
+    level: 5
+    checkMissingIterableValueType: false
+    paths:
+        - main.php
+        - mapg
+        - web.php
+        - src
+        - tests