feat: add vxe-table component (#4563)

* chore: wip vxe-table

* feat: add table demo

* chore: follow ci recommendations to adjust details

* chore: add custom-cell demo

* feat: add custom-cell table demo

* feat: add table from demo

playground/src/api/examples/index.ts

@@ -0,0 +1,2 @@
+export * from './status';
+export * from './table';