add php-nextgen to the github workflow

Author: wing328

.github/workflows/samples-php-client.yaml

@@ -4,9 +4,11 @@ on:
   push:
     paths:
       - samples/client/petstore/php/OpenAPIClient-php/**
+      - samples/client/petstore/php-nextgen/OpenAPIClient-php/**
   pull_request:
     paths:
       - samples/client/petstore/php/OpenAPIClient-php/**
+      - samples/client/petstore/php-nextgen/OpenAPIClient-php/**
 jobs:
   build:
     name: Build PHP projects
@@ -22,6 +24,7 @@ jobs:
         sample:
           # clients
           - samples/client/petstore/php/OpenAPIClient-php/
+          - samples/client/petstore/php-nextgen/OpenAPIClient-php/
     services:
       petstore-api:
         image: swaggerapi/petstore

samples/client/petstore/php-nextgen/OpenAPIClient-php/.openapi-generator-ignore

@@ -21,3 +21,5 @@
 #docs/*.md
 # Then explicitly reverse the ignore rule for a single file:
 #!docs/README.md
+#
+#