add initial marp implementation with sample content and build configuration

node_modules/mathjax-full/components/src/mml-chtml/mml-chtml.js

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+import '../startup/init.js';
+import './preload.js';
+import '../core/core.js';
+import '../input/mml/mml.js';
+import '../output/chtml/chtml.js';
+import '../output/chtml/fonts/tex/tex.js';
+import '../ui/menu/menu.js';
+import '../a11y/assistive-mml/assistive-mml.js';
+import '../startup/startup.js';

node_modules/mathjax-full/components/src/mml-chtml/preload.js

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+import {Loader} from '../../../js/components/loader.js';
+
+Loader.preLoad(
+  'loader', 'startup',
+  'core',
+  'input/mml',
+  'output/chtml', 'output/chtml/fonts/tex.js',
+  'ui/menu', 'a11y/assistive-mml'
+);

node_modules/mathjax-full/components/src/mml-chtml/webpack.config.js

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+const PACKAGE = require('../../webpack.common.js');
+
+module.exports = PACKAGE(
+  'mml-chtml',                        // the package to build
+  '../../../js',                      // location of the MathJax js library
+  [],                                 // packages to link to
+  __dirname                           // our directory
+);