Adds compatibility request issue template

Author: yenienserrano

.github/ISSUE_TEMPLATE/compatibility_request.md

@@ -0,0 +1,23 @@
+---
+name: Compatibility request
+about: Suggest supporting a new platform version OpenSearch
+title: 'Compatibility with OpenSearch (version)'
+labels: request/operational, level/task, type/maintenance
+assignees: ''
+---
+
+## Description
+
+We need to ensure the UI compatibility with the next version of OpenSearch vX.X.
+This update is still being discussed, but we need to be aware of potential issues.
+
+For that, we need to:
+
+- [ ] Review opensearch and opensearch-dashboard latest stable changelog.
+- [ ] Identify improvements and potential impact on the UI.
+- [ ] Create new tracking and development branches.
+- [ ] Develop a testing environment to verify our components would work under this new build.
+
+## Issues
+
+- _List here the detected issues_