chore(types): add types

Author: natedunn

types/index.d.ts

@@ -5,4 +5,8 @@ declare const vue3ComponentLibrary: Exclude<Plugin["install"], undefined>;
 export default vue3ComponentLibrary;
 
 export const Button: Exclude<Plugin["install"], undefined> | DefineComponent;
-export const Dropdown: Exclude<Plugin["install"], undefined> | DefineComponent;
+export const Anchor: Exclude<Plugin["install"], undefined> | DefineComponent;
+export const Dropdown: Exclude<Plugin["install"], undefined> | DefineComponent;
+export const DropdownButton: Exclude<Plugin["install"], undefined> | DefineComponent;
+export const DropdownItems: Exclude<Plugin["install"], undefined> | DefineComponent;
+export const DropdownItem: Exclude<Plugin["install"], undefined> | DefineComponent;