Refactor YAML parser exceptions and minor fixes

- Throw exception up to rest calls
- Show exceptions in the ui
- Fix casting issues in the builder
- Add collect context information in the builder
- Add context to exception
- Complete list of exceptions for reflection tests
- Replace tabs with spaces for converter classes
- Fix AbstractVisitor visiting attributes twice issue
- Fix visitor initial call to visit() instead of accept()
- Improve validation

Signed-off-by: Christoph Kleine <kleinech.github@gmail.com>

docs/dev/CodeHeaders.md

@@ -22,6 +22,11 @@ This file explains how to create and maintain copyright headers in source files.
 
 See also <https://www.eclipse.org/projects/handbook/#ip-copyright-headers>.
 
+## Regex 
+```
+\/[\*]*\n \* Copyright \(c\) \d\d\d\d Contributors to the Eclipse Foundation\n \*[ ]*\n \* See the NOTICE file\(s\) distributed with this work for additional\n \* information regarding copyright ownership.\n \*[ ]*\n \* This program and the accompanying materials are made available under the\n \* terms of the Eclipse Public License 2.0 which is available at\n \* http:\/\/www\.eclipse\.org\/legal\/epl-2\.0, or the Apache Software License 2\.0\n \* which is available at https:\/\/www\.apache\.org\/licenses\/LICENSE-2\.0\.\n \*[ ]*\n \* SPDX-License-Identifier: EPL-2\.0 OR Apache-2\.0\n [\*]*\/
+```
+
 ## Full information
 
 Full information is available at: http://www.eclipse.org/legal/copyrightandlicensenotice.php

org.eclipse.winery.model.tosca.yaml/src/main/java/org/eclipse/winery/model/tosca/yaml/visitor/AbstractVisitor.java

@@ -200,7 +200,6 @@ public R visit(TNodeTemplate node, P parameter) {
     @Override
     public R visit(TNodeType node, P parameter) {
         return reduce(Stream.of(
-            visitElement(node.getAttributes(), parameter, "attributes"),
             visitMapElement(node.getRequirements(), parameter, "requirements"),
             visitElement(node.getInterfaces(), parameter, "interfaces"),
             visitElement(node.getArtifacts(), parameter, "artifacts")