Update issue templates

Author: sdeleuze

.github/ISSUE_TEMPLATE/bug-report.md

@@ -0,0 +1,12 @@
+---
+name: Bug report
+about: Spring Native is now superseded by Spring Boot 3 official native support
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Spring Native is now superseded by Spring Boot 3 official native support, see [the related reference documentation](https://docs.spring.io/spring-boot/docs/current/reference/html/native-image.html) for more details.
+
+As a consequence, no new issue on this project should be created, and we recommend trying your use case with latest Spring Boot 3 version. If you still experience the issue reported here, please open an issue directly on the related Spring project (Spring Framework, Data, Security, Boot, Cloud, etc.) with a reproducer.