Update outline queries; add enum as a highlighted keyword

crates/zed/src/languages/php/highlights.scm

@@ -88,6 +88,7 @@
 "echo" @keyword
 "else" @keyword
 "elseif" @keyword
+"enum" @keyword
 "enddeclare" @keyword
 "endforeach" @keyword
 "endif" @keyword

crates/zed/src/languages/php/outline.scm

@@ -5,4 +5,22 @@
 
 (function_definition
     "function" @context
-    name: (_) @name) @item
+    name: (_) @name
+    ) @item
+
+
+
+(method_declaration
+    "function" @context
+    name: (_) @name
+    ) @item
+
+(interface_declaration
+    "interface" @context
+    name: (_) @name
+    ) @item
+
+(enum_declaration
+    "enum" @context
+    name: (_) @name
+    ) @item