Add capability for push

Signed-off-by: Joas Schilling <coding@schilljs.com>

docs/push-v2.md

@@ -15,9 +15,9 @@ In order to find out if notifications support push on the server you can run a r
       "capabilities": {
         ...
         "notifications": {
-          "ocs-endpoints": [
+          "push": [
             ...
-            "push"
+            "devices"
           ]
         }
       }

lib/Capabilities.php

@@ -45,6 +45,9 @@ class Capabilities implements ICapability {
 					'icons',
 					'rich-strings',
 				],
+				'push' => [
+					'devices',
+				],
 			],
 		];
 	}

tests/Unit/CapabilitiesTest.php

@@ -38,6 +38,9 @@ class CapabilitiesTest extends TestCase {
 					'icons',
 					'rich-strings',
 				],
+				'push' => [
+					'devices',
+				],
 			],
 		], $capabilities->getCapabilities());
 	}