docs: create SECURITY.md (#246)

SECURITY.md

@@ -0,0 +1,34 @@
+# Security Policy
+
+Welcome and thanks for helping us make safe solutions for everyone.
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 2.1.x   | :white_check_mark: |
+| < 2.1   | :x:                |
+
+## Reporting a Vulnerability
+
+If you believe you have found a security vulnerability in any **Camptocamp**-owned repository, please report it to us through coordinated disclosure.
+
+**Please do not report security vulnerabilities through public GitHub issues, discussions, or pull requests.**
+
+Instead, please send an email to security.inf@camptocamp.com.
+
+Please include as much of the information listed below as you can to help us better understand and resolve the issue:
+
+  * The type of issue (e.g., buffer overflow, SQL injection, or cross-site scripting)
+  * Full paths of source file(s) related to the manifestation of the issue
+  * The location of the affected source code (tag/branch/commit or direct URL)
+  * Any special configuration required to reproduce the issue
+  * Step-by-step instructions to reproduce the issue
+  * Proof-of-concept or exploit code (if possible)
+  * Impact of the issue, including how an attacker might exploit the issue
+
+This information will help us triage your report more quickly.
+
+## Security
+
+**Camptocamp** takes the security of our software products and services seriously, including all of the open source code repositories managed through our GitHub organizations, such as [Camptocamp](https://github.com/camptocamp).