[feat] fs.watch (#3249)

* initial support

* add types

* fix comment

* fix types

* bigfix up

* more fixes

* fix some encoding support for watch

* fix rename event

* fixup

* fix latin1

* add fs_events, still failing some tests

* fixuup

* remove unecesary check

* readd tests ops

* this is necessary? just testing CI/CD weird errors

* just use dupe here

* cleanup and fix deinit

* fix zig upgrade

src/bun.js/javascript.zig

@@ -2609,6 +2609,13 @@ pub fn NewHotReloader(comptime Ctx: type, comptime EventLoopType: type, comptime
             return this.tombstones.get(key);
         }
 
+        pub fn onError(
+            _: *@This(),
+            err: anyerror,
+        ) void {
+            Output.prettyErrorln("<r>Watcher crashed: <red><b>{s}<r>", .{@errorName(err)});
+        }
+
         pub fn onFileUpdate(
             this: *@This(),
             events: []watcher.WatchEvent,