Add attribute JSDoc annotations for better vscode-lit-plugin support

[web-padawan]

We recommend VSCode lit-plugin for creating TypeScript views, and we use it also in our TypeScript examples

It turns out that our components need @attr JSDoc annotation for camelCase properties to avoid warnings.
See vaadin/vaadin-grid#1774 and vaadin/vaadin-combo-box#896

Let's update the components to include JSDoc annotations where needed.

• vaadin-app-layout docs: add JSDoc for attributes [skip ci] vaadin-app-layout#161
• vaadin-checkbox docs: add JSDoc for attributes [skip ci] vaadin-checkbox#179
  • cherry-pick: docs: add JSDoc for attributes [skip ci] (#179) vaadin-checkbox#180
• vaadin-combo-box docs: add JSDoc for attributes [skip ci] vaadin-combo-box#897
• vaadin-context-menu docs: add JSDoc for attributes [skip ci] vaadin-context-menu#278
• vaadin-custom-field docs: add JSDoc for attributes [skip ci] vaadin-custom-field#81
  • cherry-pick: docs: add JSDoc for attributes [skip ci] (#81) vaadin-custom-field#82
• vaadin-date-picker docs: add JSDoc for attributes [skip ci] vaadin-date-picker#729
  • cherry-pick: docs: add JSDoc for attributes [skip ci] (#729) vaadin-date-picker#730
• vaadin-date-time-picker docs: add JSDoc for attributes [skip ci] vaadin-date-time-picker#43
  • cherry-pick: docs: add JSDoc for attributes [skip ci] (#43) vaadin-date-time-picker#44
• vaadin-dialog docs: add JSDoc for attributes [skip ci] vaadin-dialog#179
• vaadin-grid docs: add JSDoc for attributes [skip ci] vaadin-grid#1776
• vaadin-menu-bar docs: add JSDoc for attributes [skip ci] vaadin-menu-bar#110
• vaadin-radio-button docs: add JSDoc for attributes [skip ci] vaadin-radio-button#158
  • cherry-pick: docs: add JSDoc for attributes [skip ci] (#158) vaadin-radio-button#159
• vaadin-select docs: add JSDoc for attributes [skip ci] vaadin-select#231
  • cherry-pick: docs: add JSDoc for attributes [skip ci] (#231) vaadin-select#232
• vaadin-text-field docs: add JSDoc for attributes [skip ci] vaadin-text-field#489
  • cherry-pick: docs: add JSDoc for attributes [skip ci] (#489) vaadin-text-field#490
• vaadin-time-picker docs: add JSDoc for attributes [skip ci] vaadin-time-picker#155
  • cherry-pick: docs: add JSDoc for attributes [skip ci] (#155) vaadin-time-picker#156
• vaadin-upload docs: add JSDoc for attributes [skip ci] vaadin-upload#319
• vaadin-charts docs: add JSDoc for attributes [skip ci] vaadin-charts#487
• vaadin-confirm-dialog docs: add JSDoc for attributes [skip ci] vaadin-confirm-dialog#110
• vaadin-cookie-consent docs: add JSDoc for attributes [skip ci] vaadin-cookie-consent#65
• vaadin-crud docs: add JSDoc for attributes [skip ci] vaadin-crud#203
• vaadin-grid-pro docs: add JSDoc for attributes [skip ci] vaadin-grid-pro#126