Upload Code Of Conduct

Author: Andrea-Perelli

CODE_OF_CONDUCT.md

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+# Jjodel Code of Conduct
+
+## Short Version
+We, as members, contributors, and maintainers of **Jjodel**, pledge to foster an open, welcoming, and harassment-free environment for everyone, regardless of age, ability, gender identity or expression, ethnicity, education, experience, nationality, personal appearance, race, religion, or sexual orientation.
+
+We aim to build a collaborative and inclusive community where learning, research, and innovation in model-driven engineering can thrive.
+
+If you experience or witness behavior that violates this Code of Conduct, please contact:
+
+* [Alfonso Pierantonio](https://github.com/apierantonio)
+* [Juri Di Rocco](https://github.com/jdirocco)
+
+---
+
+## Our Standards
+
+### Positive Behaviors
+* Be respectful, patient, and considerate.  
+* Welcome different viewpoints and experiences.  
+* Offer and accept constructive feedback gracefully.  
+* Focus on collaboration, learning, and improvement.  
+* Acknowledge and credit the work of others.  
+
+### Unacceptable Behaviors
+* Harassment, intimidation, or discrimination of any kind.  
+* Insults, personal attacks, or trolling.  
+* Publishing private information without consent.  
+* Any behavior that could reasonably be considered inappropriate in a professional or educational setting.
+
+---
+
+## Enforcement
+Project maintainers are responsible for clarifying and enforcing this Code of Conduct. They may remove or reject comments, commits, or contributions that violate these principles, or temporarily/permanently ban contributors as necessary to protect the community.
+
+All reports will be handled confidentially and with respect for all parties involved.
+
+---
+
+## Scope
+This Code applies to all project spaces, including repositories, issue trackers, communication channels, and events where the Jjodel community is represented.  
+It also applies when individuals act on behalf of Jjodel, online or offline.
+
+---
+
+## Enforcement Guidelines
+1. **Correction** – A private reminder or clarification when behavior is unintentional or minor.  
+2. **Warning** – A written warning for repeated or more serious behavior.  
+3. **Temporary Ban** – Limited participation for a defined period in case of serious or repeated violations.  
+4. **Permanent Ban** – Removal from the community for sustained or severe misconduct.
+
+---
+
+## Attribution
+This Code of Conduct is adapted from the [Contributor Covenant v3.0](https://www.contributor-covenant.org/version/3/0/), with additional structural inspiration from the [BESSER Project Code of Conduct](https://github.com/BESSER-PEARD).  
+Licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).