github: maennchen

• [D] ISSUE_TEMPLATE
• [D] PULL_REQUEST_TEMPLATE
• [D] workflows
• [F] CODE_OF_CONDUCT.md
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• [F] CONTRIBUTING.md
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• [F] dependabot.yml
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• [F] FUNDING.yml
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• [F] PULL_REQUEST_TEMPLATE.md
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• [F] scorecard.yml
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• [F] SECURITY.md
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