Mark processed tables (#121)

* Update table-sort.js

Make sure each table is processed once by adding the class name "table-processed". This prevents re-processing tables and attaching repeated arrows and click events in scenarios where new tables are dynamically added to a web page/application. Now, only new tables are made sortable.

* Update table-sort.js

Author: alijsh

public/table-sort.js

@@ -26,7 +26,7 @@ function tableSortJs(testingTableSortJS = false, domDocumentWindow = document) {
   const [getTagTable] = getHTMLTables();
   const columnIndexAndTableRow = {};
   for (let table of getTagTable) {
-    if (table.classList.contains("table-sort")) {
+    if (table.classList.contains("table-sort") && !table.classList.contains("table-processed")) {
       makeTableSortable(table);
     }
   }
@@ -113,7 +113,8 @@ function tableSortJs(testingTableSortJS = false, domDocumentWindow = document) {
     }
   }
 
-  function makeTableSortable(sortableTable) {
+  function makeTableSortable(sortableTable) {  
+    sortableTable.classList.add("table-processed");
     const table = {
       bodies: getTableBodies(sortableTable),
       theads: sortableTable.querySelectorAll("thead"),