feat: table html encoder and decoder added

lib/src/plugins/html/encoder/parser/html_parser.dart

@@ -4,5 +4,6 @@ export 'html_node_parser.dart';
 export 'image_node_parser.dart';
 export 'numbered_list_node_parser.dart';
 export 'quote_node_parser.dart';
+export 'table_node_parser.dart';
 export 'text_node_parser.dart';
 export 'todo_list_node_parser.dart';

lib/src/plugins/html/encoder/parser/table_node_parser.dart

@@ -0,0 +1,69 @@
+import 'package:appflowy_editor/appflowy_editor.dart';
+import 'package:collection/collection.dart';
+import 'package:html/dom.dart' as dom;
+
+import '../../../../editor/block_component/table_block_component/util.dart';
+
+class HtmlTableNodeParser extends HTMLNodeParser {
+  const HtmlTableNodeParser();
+
+  @override
+  String get id => TableBlockKeys.type;
+
+  @override
+  String transformNodeToHTMLString(
+    Node node, {
+    required List<HTMLNodeParser> encodeParsers,
+  }) {
+    assert(node.type == TableBlockKeys.type);
+
+    return toHTMLString(
+      transformNodeToDomNodes(node, encodeParsers: encodeParsers),
+    );
+  }
+
+  @override
+  List<dom.Node> transformNodeToDomNodes(
+    Node node, {
+    required List<HTMLNodeParser> encodeParsers,
+  }) {
+    final int rowsLen = node.attributes['rowsLen'],
+        colsLen = node.attributes['colsLen'];
+    final List<dom.Node> domNodes = [];
+
+    for (var i = 0; i < rowsLen; i++) {
+      final List<dom.Node> nodes = [];
+      for (var j = 0; j < colsLen; j++) {
+        final Node cell = getCellNode(node, j, i)!;
+
+        for (final childnode in cell.children) {
+          HTMLNodeParser? parser = encodeParsers.firstWhereOrNull(
+            (element) => element.id == childnode.type,
+          );
+
+          if (parser != null) {
+            nodes.add(
+              wrapChildrenNodesWithTagName(
+                HTMLTags.tabledata,
+                childNodes: parser.transformNodeToDomNodes(
+                  childnode,
+                  encodeParsers: encodeParsers,
+                ),
+              ),
+            );
+          }
+        }
+      }
+      final rowelement =
+          wrapChildrenNodesWithTagName(HTMLTags.tableRow, childNodes: nodes);
+
+      domNodes.add(rowelement);
+    }
+
+    final element =
+        wrapChildrenNodesWithTagName(HTMLTags.table, childNodes: domNodes);
+    return [
+      element,
+    ];
+  }
+}

lib/src/plugins/html/html_document.dart

@@ -28,6 +28,7 @@ String documentToHTML(
       const HTMLQuoteNodeParser(),
       const HTMLHeadingNodeParser(),
       const HTMLImageNodeParser(),
+      const HtmlTableNodeParser()
     ],
   ).encode(document);
 }