Add FUNDING informations

Author: williamdes

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: "williamdes"

composer.json

@@ -14,6 +14,17 @@
             "email": "williamdes@wdes.fr"
         }
     ],
+    "funding": [
+        {
+            "type": "github",
+            "url": "https://github.com/sponsors/williamdes"
+        }
+    ],
+    "support": {
+        "email": "williamdes@wdes.fr",
+        "issues": "https://github.com/code-lts/Laravel-FCM/issues",
+        "source": "https://github.com/code-lts/Laravel-FCM"
+    },
     "require": {
         "php": "^7.1.3 || ^8.0",
         "illuminate/support": "^5.6 || ^6 || ^7 || ^8 || ^9 || ^10",