docs(cdk\drag-drop): Add table drag drop example

Adds an example that shows how to drag and drop table rows
Fixes angular#25168

src/components-examples/cdk/drag-drop/cdk-drag-drop-table/cdk-drag-drop-table-example.css

@@ -1,28 +1,28 @@
-table {
-  width: 100%;
-}
-
-.dragCursor {
-  margin-right: 16px;
-  cursor: move;
-}
-
-.cdk-drag-preview {
-  box-sizing: border-box;
-  border-radius: 4px;
-  box-shadow: 0 5px 5px -3px rgba(0, 0, 0, 0.2),
-    0 8px 10px 1px rgba(0, 0, 0, 0.14),
-    0 3px 14px 2px rgba(0, 0, 0, 0.12);
-}
-
-.cdk-drag-placeholder {
-  background: #e0e0e0;
-}
-
-.cdk-drag-animating {
-  transition: transform 250ms cubic-bezier(0, 0, 0.2, 1);
-}
-
-.cdk-drop-list-dragging .mat-row:not(.cdk-drag-placeholder) {
-  transition: transform 250ms cubic-bezier(0, 0, 0.2, 1);
-}
+table {
+  width: 100%;
+}
+
+.example-drag-cursor {
+  margin-right: 16px;
+  cursor: move;
+}
+
+.cdk-drag-preview {
+  box-sizing: border-box;
+  border-radius: 4px;
+  box-shadow: 0 5px 5px -3px rgba(0, 0, 0, 0.2),
+    0 8px 10px 1px rgba(0, 0, 0, 0.14),
+    0 3px 14px 2px rgba(0, 0, 0, 0.12);
+}
+
+.cdk-drag-placeholder {
+  background: #e0e0e0;
+}
+
+.cdk-drag-animating {
+  transition: transform 250ms cubic-bezier(0, 0, 0.2, 1);
+}
+
+.cdk-drop-list-dragging .mat-row:not(.cdk-drag-placeholder) {
+  transition: transform 250ms cubic-bezier(0, 0, 0.2, 1);
+}

src/components-examples/cdk/drag-drop/cdk-drag-drop-table/cdk-drag-drop-table-example.html

@@ -4,7 +4,7 @@
   <ng-container matColumnDef="position" sticky>
     <mat-header-cell *matHeaderCellDef> No. </mat-header-cell>
     <mat-cell *matCellDef="let element">
-      <mat-icon class="dragCursor" (mousedown)="dragDisabled = false;">reorder</mat-icon>
+      <mat-icon class="example-drag-cursor" (mousedown)="dragDisabled = false;">reorder</mat-icon>
       <span>{{element.position}}</span>
     </mat-cell>
   </ng-container>