V2.6.0-release

The main modifications of V2.6.0-release version focus on:

1. Enhanced functions

   Support for spatial database plugin PostGIS.

   Support for RPM package deployment.

   Added a plugin slowquery to log SQL queries that exceed the set execution time threshold.

2. Other known bug fixes

   Fixed operating systems support issues

   Fixed the make html compilation issue caused by /doc/src/sgml/func.sgml

3. Peripheral ecosystem

   Added guidelines and documentation for docker deployment cases

   Added support for the KubeBlock plugin for Kubernetes cluster deployment, along with new deployment case guidelines and documentation

   Added guidelines and documentation for monitoring deployment cases based on Grafana/Prometheus