Get tinyMCE via composer

.gitignore

@@ -23,6 +23,9 @@
 /app/etc/modules/Cm_RedisSession.xml
 /lib/Credis
 
+# TinyMCE library
+/js/tinymce
+
 # Add a base setup for running unit Tests with code coverage and send them to SonarCloud
 # https://github.com/OpenMage/magento-lts/pull/1836
 /dev/testfield

composer.json

@@ -30,9 +30,11 @@
         "phpseclib/mcrypt_compat": "^2.0.3",
         "phpseclib/phpseclib": "^3.0.14",
         "shardj/zf1-future": "1.23.5",
+        "sreichel/composer-plugin-file-copier": "dev-develop",
         "symfony/polyfill-php74": "^1.27",
         "symfony/polyfill-php80": "^1.27",
-        "symfony/polyfill-php81": "^1.27"
+        "symfony/polyfill-php81": "^1.27",
+        "tinymce/tinymce": "^6.7"
     },
     "require-dev": {
         "dealerdirect/phpcodesniffer-composer-installer": "^1.0.0",
@@ -84,6 +86,10 @@
         }
     },
     "extra": {
+        "file-copier" : {
+            "source": "tinymce/tinymce",
+            "target": "js/tinymce"
+        },
         "magento-root-dir": ".",
         "magento-deploystrategy": "copy",
         "magento-deploystrategy-dev": "symlink",
@@ -109,7 +115,8 @@
         "allow-plugins": {
             "magento-hackathon/magento-composer-installer": true,
             "dealerdirect/phpcodesniffer-composer-installer": true,
-            "cweagans/composer-patches": true
+            "cweagans/composer-patches": true,
+            "sreichel/composer-plugin-file-copier": true
         },
         "platform": {
             "php": "7.4"