feat(ts_web): support TC39 accessor decorators for web components; bump dependencies and devDependencies; rename browser tests to .chromium.ts; move LICENSE to license.md and update readme

ts_web/taskbuffer-dashboard.ts

@@ -8,20 +8,20 @@ import type { TaskManager, ITaskMetadata, IScheduledTaskInfo } from '../ts/index
 export class TaskbufferDashboard extends DeesElement {
   // Properties
   @property({ type: Object })
-  public taskManager: TaskManager | null = null;
+  accessor taskManager: TaskManager | null = null;
 
   @property({ type: Number })
-  public refreshInterval: number = 1000; // milliseconds
+  accessor refreshInterval: number = 1000; // milliseconds
 
   // Internal state
   @state()
-  private tasks: ITaskMetadata[] = [];
+  accessor tasks: ITaskMetadata[] = [];
 
   @state()
-  private scheduledTasks: IScheduledTaskInfo[] = [];
+  accessor scheduledTasks: IScheduledTaskInfo[] = [];
 
   @state()
-  private isRunning: boolean = false;
+  accessor isRunning: boolean = false;
 
   private refreshTimer: any;