feat(theme,interfaces): Introduce a global theming system and unify menu/tab interfaces; migrate components to use themeDefaultStyles and update APIs accordingly

ts_web/elements/dees-pagination/dees-pagination.ts

@@ -1,5 +1,6 @@
 import { customElement, html, DeesElement, property, css, cssManager, type TemplateResult } from '@design.estate/dees-element';
 import { demoFunc } from './dees-pagination.demo.js';
+import { themeDefaultStyles } from '../00theme.js';
 
 declare global {
   interface HTMLElementTagNameMap {
@@ -23,8 +24,10 @@ export class DeesPagination extends DeesElement {
   accessor total = 1;
 
   public static styles = [
+    themeDefaultStyles,
     cssManager.defaultStyles,
     css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
       :host {
         display: inline-flex;
         align-items: center;