EGO-L-002 warning

objects created by extension should be destroyed in disable()

Objects assigned in `enable()` are missing matching `.destroy()` calls in `disable()` or its helper methods.

Destroy all objects

• extension.js:121

  this._countdownItem = countdownContainer

• extension.js:115

      this._countdownLabel = new St.Label({
        text: '',
        x_expand: true,
        x_align: Clutter.ActorAlign.CENTER,
      })

• extension.js:39

      this._hourglassLabel = new St.Label({
        text: '⏳ ',
        y_align: Clutter.ActorAlign.CENTER,
      })

• extension.js:33

      this._panelBox = new St.BoxLayout({
        style_class: 'memento-mori-panel-box',
        y_align: Clutter.ActorAlign.CENTER,
      })

• extension.js:57

      this._placeholderLabel = new St.Label({
        text: 'memento mori.',
        y_align: Clutter.ActorAlign.CENTER,
      })