Update authors and namespace in composer.json

Author: iamprashant

composer.json

@@ -10,17 +10,27 @@
     "sdk"
   ],
   "homepage": "https://github.com/rapidaai/rapida-php",
+  "authors": [
+    {
+      "name": "RapidaAI",
+      "homepage": "https://rapida.ai"
+    }
+  ],
+  "support": {
+    "issues": "https://github.com/rapidaai/rapida-php/issues",
+    "source": "https://github.com/rapidaai/rapida-php"
+  },
   "autoload": {
     "psr-4": {
-      "Rapida\\": "src/"
+      "RapidaAI\\": "src/"
     },
     "classmap": [
       "src/Clients/Protos"
     ]
   },
   "autoload-dev": {
     "psr-4": {
-      "Rapida\\Tests\\": "tests/"
+      "RapidaAI\\Tests\\": "tests/"
     }
   },
   "require": {