packaging: Add pesde support, feat: Add searching and clearing to ref

+ Added pesde support

+ Added `.search()` to `ref` and made `ref()` (`.set_ref()`) & `.search()` return a clearer which removes the reference

+ Bumped to 0.1.6

.zed/settings.json

@@ -21,8 +21,8 @@
             "mode": "relativeToFile",
             "fileAliases": {
               "@jecs_utils": "lib",
-              "@jecs": "Packages/jecs",
-              "@testkit": "test/testkit"
+              "@testkit": "test/testkit",
+              "@jecs": "Packages/jecs"
             },
             "directoryAliases": {
               "@lune": ".lune/.lune-defs/"