KV watch multiple filters

[Jarema]

Overview

KV watch supports only single filter, which has limitations similar to those of single filter consumers.

Clients should support kv::watch watching multiple filters, leveraging consumers with multiple filters.

That can be a separate method (for example watch_many), or extension to the current one, depending on the language and it's ability to introduce multiple KV watch filters without breaking changes.

Clients and Tools

• Schemas @ripienaar
• CLI @ripienaar
• Terraform @ripienaar
• Github Actions @ripienaar
• Go @piotrpio
• Java @scottf KV Watch Multiple Filters nats.java#1113
• JavaScript @aricart [FEAT] [JETSTREAM] [KV] support multiple key filters on watchers/history nats.deno#681
• .Net @scottf https://github.com/nats-io/nats.net/pull/887
• C @levb [ADDED] kvStore_WatchMulti, js_Subscribe[Sync]Multi nats.c#750
• Python @wallyqs
• Ruby @wallyqs
• Rust @Jarema
• .Net V2 @mtmk KV watch multiple filters nats.net#476

Other Tasks

• docs.nats.io updated @bruth
• Update ADR to Implemented
• Update client features spreadsheet

Client authors please update with your progress. If you open issues in your own repositories as a result of this request, please link them to this one by pasting the issue URL in a comment or main issue description.