PY-20735 Fixed: Creating a setup.py with "'" in the description breaks the output in the resulting file

Implement setup.py template handler which escapes `description` property.

python/src/META-INF/python-core-common.xml

@@ -615,6 +615,8 @@
 
     <toolWindow id="Data View" factoryClass="com.jetbrains.python.debugger.containerview.PyDataViewToolWindowFactory" anchor="right" icon="PythonIcons.Python.DataView"/>
     <projectService serviceInterface="com.jetbrains.python.debugger.containerview.PyDataView" serviceImplementation="com.jetbrains.python.debugger.containerview.PyDataView"/>
+
+    <createFromTemplateHandler implementation="com.jetbrains.python.packaging.setupPy.PyCreateSetupPyFromTemplateHandler"/>
   </extensions>
 
   <extensionPoints>

python/src/com/jetbrains/python/packaging/setupPy/PyCreateSetupPyFromTemplateHandler.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2000-2017 JetBrains s.r.o.
+ *
+ * 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.
+ */
+package com.jetbrains.python.packaging.setupPy
+
+import com.intellij.ide.fileTemplates.DefaultCreateFromTemplateHandler
+import com.intellij.ide.fileTemplates.FileTemplate
+import com.intellij.ide.fileTemplates.FileTemplateManager
+import com.intellij.openapi.util.text.StringUtil
+
+class PyCreateSetupPyFromTemplateHandler : DefaultCreateFromTemplateHandler() {
+
+  override fun handlesTemplate(template: FileTemplate?): Boolean {
+    return template == FileTemplateManager.getDefaultInstance().getInternalTemplate("Setup Script")
+  }
+
+  override fun prepareProperties(props: MutableMap<String, Any>?) {
+    if (props != null) {
+      val description = props["Description"]
+      if (description is String) {
+        props["Description"] = StringUtil.escapeChar(description, '\'')
+      }
+    }
+  }
+}