Export new ColumnBreak class via more generic Break class

src/file/paragraph/formatting/index.ts

@@ -1,7 +1,7 @@
 export * from "./alignment";
 export * from "./border";
 export * from "./indent";
-export * from "./page-break";
+export * from "./break";
 export * from "./spacing";
 export * from "./style";
 export * from "./tab-stop";