feat(grid): define inline header buttons

[anbalase]

         <ui-header-button type="inline">
            <ng-template>
                <ng-container *ngIf="hasCustomFilters$ | async">
                    <mat-divider class="ui-grid-reset-divider" vertical="true"></mat-divider>
                    <button (click)="resetFilter()"
                            class="ui-grid-button-reset"
                            mat-button
                            color="primary">
                        <span translate>reset_to_defaults</span>
                    </button>
                </ng-container>
            </ng-template>
        </ui-header-button>