[FEATURE] Add shy plugin from Sigfried Arnold

Resources/Public/JavaScript/TinymcePlugins/shy/langs/de.js

+tinymce.addI18n('de', {
+	'Soft hyphen': 'Bedingter Trennstrich',
+});
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Resources/Public/JavaScript/TinymcePlugins/shy/plugin.js

+/**
+ * plugin.js for TinyMCE soft hyphen (shy)
+ *
+ */
+
+tinymce.PluginManager.requireLangPack('shy', 'de');
+
+tinymce.PluginManager.add('shy', function(editor) {
+	editor.addCommand('mceShy', function() {
+		editor.insertContent(
+			(editor.plugins.visualchars && editor.plugins.visualchars.state) ?
+			'<span class="mce-shy">&shy;</span>' : '&shy;'
+		);
+		editor.dom.setAttrib(editor.dom.select('span.mce-shy'), 'data-mce-bogus', '1');
+	});
+
+	editor.addButton('shy', {
+		title: 'Soft hyphen',
+		image: tinyMCE.baseURL + '/plugins/shy/icon.png',
+		cmd: 'mceShy'
+	});
+
+	editor.addMenuItem('shy', {
+		text: 'Soft hyphen',
+		cmd: 'mceShy',
+		context: 'insert'
+	});
+});
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Resources/Public/JavaScript/TinymcePlugins/shy/plugin.min.js

+tinymce.PluginManager.requireLangPack("shy","de");tinymce.PluginManager.add("shy",function(e){e.addCommand("mceShy",function(){e.insertContent(e.plugins.visualchars&&e.plugins.visualchars.state?'<span class="mce-shy">&shy;</span>':"&shy;");e.dom.setAttrib(e.dom.select("span.mce-shy"),"data-mce-bogus","1")});e.addButton("shy",{title:"Soft hyphen",image:tinyMCE.baseURL+"/plugins/shy/icon.png",cmd:"mceShy"});e.addMenuItem("shy",{text:"Soft hyphen",cmd:"mceShy",context:"insert"})})
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