Support all types of chips outlines in the Material Design spec

[keatkeat87]

build-in Choice chips as material guidelines.

Choice chips

choice chips need 2 feature,

1. select by click not keyboard space.
2. when user select, it can't be unselect anymore (like radio, toggle button)

for workaround i can do like this.

<mat-chip-list [formControl]="formControl" aria-label="Fish selection">
  <mat-chip #chip1="matChip" [selectable]="!chip1.selected" (click)="chip1.selectable && chip1.toggleSelected(true)" >One fish</mat-chip>
  <mat-chip #chip2="matChip" [selectable]="!chip2.selected" (click)="chip2.selectable && chip2.toggleSelected(true)" >Two fish</mat-chip>
  <mat-chip #chip3="matChip" [selectable]="!chip3.selected" (click)="chip3.selectable && chip3.toggleSelected(true)" >Primary fish</mat-chip>
  <mat-chip #chip4="matChip" [selectable]="!chip4.selected" (click)="chip4.selectable && chip4.toggleSelected(true)" >Accent fish</mat-chip>
</mat-chip-list>

[siva636]

When it is likely to be ready?

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