feat(material-expeirmental/mdc-list): add support for focus/hover states

and ripples

Author: mmalerba

src/material-experimental/mdc-list/action-list.ts

@@ -23,4 +23,6 @@ import {MatListBase} from './list-base';
     {provide: MatListBase, useExisting: MatActionList},
   ]
 })
-export class MatActionList extends MatListBase {}
+export class MatActionList extends MatListBase {
+  _hasRipple = true;
+}

src/material-experimental/mdc-list/nav-list.ts

@@ -33,4 +33,6 @@ import {MatListBase} from './list-base';
     {provide: MatList, useExisting: MatNavList},
   ]
 })
-export class MatNavList extends MatListBase {}
+export class MatNavList extends MatListBase {
+  _hasRipple = true;
+}