[FEATURE] Integration of the codemirror plugin

...c/Plugins/tinymce-codemirror/plugins/codemirror/plugin.js

...ugins/tinymce-codemirror/plugins/codemirror/plugin.min.js

...Plugins/tinymce-codemirror/plugins/codemirror/source.html

Resources/Public/Plugins/tinymce-codemirror/test.html

...ic/Plugins/tinymce-codemirror/tinymce-codemirror-logo.png

Resources/Public/Plugins/tinymce-codemirror/tinymce-logo.png

...urces/Public/Plugins/tinymce-codemirror/webpower-logo.jpg