Prepare 1.0 (#3)

Author: smnandre

composer.json

@@ -54,7 +54,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-main": "0.x-dev"
+            "dev-main": "1.x-dev"
         },
         "thanks": {
             "name": "playwright-php/playwright",