Change src folder structure to match PSR-4 standards

 Update compose.json file to autoload using psr-4 standards

Author: sanjaymandadi

composer.json

@@ -17,7 +17,12 @@
     },
     "autoload": {
         "psr-4": {
-            "Mozu": "src/"
+            "Mozu\\Api\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Mozu\\Tests\\": "tests/"
         }
     },
     "extra": {

src/Mozu/Api/ApiContext.php renamed to src/ApiContext.php

@@ -2,9 +2,7 @@
 
 namespace Mozu\Api;
 
-use Mozu\Api\Contracts\Tenant\Tenant;
 use Mozu\Api\Helpers\SignatureResolver;
-use Mozu\Api\Security\AppAuthenticator;
 
 interface iApiContext 
 {

src/Mozu/Api/ApiException.php renamed to src/ApiException.php

@@ -1,7 +1,6 @@
 <?php
 namespace Mozu\Api;
 
-use Mozu\Api\iApiContext;
 
 class ApiException extends \RuntimeException {
 	private $correlationId;