Add extension ev support (#703)

* Add extension ev support

* Sort config

* Correct ev build arg for windows

* Use static-php mirror of nasm

* Fix windows ev patch

* Oops

config/source.json

@@ -92,6 +92,16 @@
             "path": "LICENSE"
         }
     },
+    "ev": {
+        "type": "url",
+        "url": "https://pecl.php.net/get/ev",
+        "path": "php-src/ext/ev",
+        "filename": "ev.tgz",
+        "license": {
+            "type": "file",
+            "path": "LICENSE"
+        }
+    },
     "ext-ds": {
         "type": "url",
         "url": "https://pecl.php.net/get/ds",