immutable data structures in tables 2/n: managed table

Summary:
Migrating tables' row collection to Immutable.js List:
1. Change native array to Immutable list in ManagedTable_immutable

-----
Current implementation of tables forces to copy arrays on new data arrival which causes O(N^2) complexity ->
tables can't handle a lot of new rows in short period of time -> tables freeze and become unresponsive for a few seconds.
Immutable data structures will bring us to O(N) complexity

Reviewed By: jknoxville

Differential Revision: D16416869

fbshipit-source-id: 6d5690d8f5f70286f31a423e319b2cb22deab8ff

src/ui/index.js

@@ -30,6 +30,7 @@ export {default as Popover} from './components/Popover.js';
 export type {
   TableColumns,
   TableRows,
+  TableRows_immutable,
   TableBodyColumn,
   TableBodyRow,
   TableHighlightedRows,
@@ -40,6 +41,13 @@ export type {
 } from './components/table/types.js';
 export {default as ManagedTable} from './components/table/ManagedTable.js';
 export type {ManagedTableProps} from './components/table/ManagedTable.js';
+export {
+  default as ManagedTable_immutable,
+} from './components/table/ManagedTable_immutable.js';
+export type {
+  ManagedTableProps_immutable,
+} from './components/table/ManagedTable_immutable.js';
+
 export type {Value} from './components/table/TypeBasedValueRenderer.js';
 export {renderValue} from './components/table/TypeBasedValueRenderer.js';