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/00group-input/dees-input-multitoggle/dees-input-multitoggle.ts

@@ -11,6 +11,7 @@ import { DeesInputBase } from '../dees-input-base/dees-input-base.js';
 import * as colors from '../../00colors.js'
 
 import { demoFunc } from './dees-input-multitoggle.demo.js';
+import { themeDefaultStyles } from '../../00theme.js';
 
 declare global {
   interface HTMLElementTagNameMap {
@@ -67,9 +68,11 @@ export class DeesInputMultitoggle extends DeesInputBase<DeesInputMultitoggle> {
   }
 
   public static styles = [
+    themeDefaultStyles,
     ...DeesInputBase.baseStyles,
     cssManager.defaultStyles,
     css`
+      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
       :host {
         color: ${cssManager.bdTheme('#09090b', '#fafafa')};
         user-select: none;