Support Multiple Fess Instances on a Single OpenSearch Instance

[marevol]

This update allows a single OpenSearch instance to support multiple Fess web applications. The changes include updates to index naming patterns, the addition of a dictionary prefix configuration, and modifications to various index-related processes to ensure that multiple Fess instances can coexist and function correctly on the same OpenSearch infrastructure. This enhancement aims to improve scalability and flexibility in environments where multiple Fess applications need to operate concurrently on a single OpenSearch instance.