add initial marp implementation with sample content and build configuration

node_modules/mathjax-full/ts/util/entities/j.ts

@@ -0,0 +1,29 @@
+/*************************************************************
+ *
+ *  Copyright (c) 2017-2022 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+import * as Entities from '../Entities.js';
+
+Entities.add({
+    Jcirc: '\u0134',
+    Jcy: '\u0419',
+    Jsercy: '\u0408',
+    Jukcy: '\u0404',
+    jcirc: '\u0135',
+    jcy: '\u0439',
+    jsercy: '\u0458',
+    jukcy: '\u0454'
+}, 'j');