tool_req__docs_req_weak_content: Check weak content for needs

[MaximilianSoerenPollak]

There are certain weak works (defined in the metamodel) that are forbidden to be inside the content.

This should be checked and enforced for the following types:

• Stakeholder Requirements

• Feature Requirements

• Component Requirements

• Tool Requirements

• Ensure the metamodel is correctly read

• Ensure RST tests are there & passing

• Create UNIT Tests if needed

Code Link

[MaximilianSoerenPollak]

Example for the metamodel.

The check should be a generic one that can check any option added here.
Types => Needs_types that are tagged with this tag (only these should be checked)