v6: Migrate components to OnPush strategy (next branch)

[Akshat55]

As of now, only a few components support OnPush strategy, most components should be fairly straight forward to migrate. There is a likely hood of Angular moving away from zone.js in future releases, this step allows us to move closer to zone-less.

Components to migrate:

• Accordion
• Breadcrumb
• Button (icon)
• Combobox
• Content switcher
• Context-menu
• Date picker
• Datepicker input
• Dropdown
• File uploader
• Inline loading
• Input (Input/Password/Textarea)
• Loading
• Modal
• Notification
• Number Input
• Pagination
• progress bar
• Progress Indicator
• Radio
• Search
• Select
• Slider (Possible rewrite)
• Table
• Tabs (Possible rewrite)
• Tag
• Tiles
• Time picker
• Time picker select
• Toggle
• Treeview
• UI-shell

Since many components are going to be straight forward, we will accept batch PRs.

[eduardmarcinco]

Checkbox component is already using on push strategy.

carbon-components-angular/src/checkbox/checkbox.component.ts

Line 72 in 5c03216

changeDetection: ChangeDetectionStrategy.OnPush