Feature/deploymentmodelcompletion

[mbeisel]

Added endpoints for completing deploymentModels based on requirements and capabilities. Additionally policies and blacklists for NodeType Tags are supported.

Added endpoint for checking if a ServiceTemplate is complete, i.e., has no open requirements.

Added endpoint for checking if equivalent ServiceTemplates already exist in the Winery

• Ensure that you followed our toolchain guide.
• Branch name checked. That means, the branch name starts with thesis/, fix/, ...
• Ensure that the commit message is a good commit message
• Ensure to use auto format in all files
• Ensure that you appear in NOTICE at Copyright Holders
• Tests created for changes
• Documentation updated (if needed)
• Screenshots added (for UI changes)