feat: updated glossary to include modifiers and events

src/content/docs/concepts/glossary.mdx

@@ -57,6 +57,13 @@ and APIs. Such features qualify as _**Mini Apps**_.
 
 </Aside>
 
+## Modules & Packages
+
+These are synonymous with Features. Vyuh encourages dividing your application
+into a set of modules or packages, each encapsulating a specific functionality.
+Each module can be developed and tested independently. When the module is ready,
+it can be plugged into the main app.
+
 ## Plugin
 
 Plugins are a way to provide cross-cutting functionality that can be used by any