Add API base URL castomization option

composer.json

@@ -21,7 +21,11 @@
         "league/oauth2-client": "^2.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "~10.3"
+        "phpstan/extension-installer": "^1.3",
+        "phpstan/phpdoc-parser": "^1.29",
+        "phpstan/phpstan": "^1.10",
+        "phpstan/phpstan-strict-rules": "^1.5",
+        "phpunit/phpunit": "^11.1"
     },
     "autoload": {
         "psr-4": {
@@ -30,12 +34,25 @@
     },
     "autoload-dev": {
         "psr-4": {
-            "Sept\\OAuth2\\Client\\Test\\": "test/src/"
+            "Sept\\OAuth2\\Client\\Test\\": "tests"
         }
     },
     "extra": {
         "branch-alias": {
             "dev-master": "1.0.x-dev"
         }
+    },
+    "scripts": {
+        "test": [
+            "@phpunit",
+            "@phpstan"
+        ],
+        "phpunit": "vendor/bin/phpunit",
+        "phpstan": "vendor/bin/phpstan"
+    },
+    "config": {
+        "allow-plugins": {
+            "phpstan/extension-installer": true
+        }
     }
 }