symfony: add page (#2737)

pages/common/symfony.md

@@ -0,0 +1,19 @@
+# symfony
+
+> The console component for the Symfony framework.
+
+- Create a new Symfony project:
+
+`symfony new {{name}}`
+
+- Run a local web server:
+
+`symfony serve`
+
+- Stop the local web server:
+
+`symfony server:stop`
+
+- Check for security issues in the project's dependencies:
+
+`symfony security:check`