docs(ecosystem): add opencode-tavily plugin (#38709)

Author: lakshyaag-tavily

packages/web/src/content/docs/ecosystem.mdx

@@ -54,6 +54,7 @@ You can also check out [awesome-opencode](https://github.com/awesome-opencode/aw
 | [opencode-firecrawl](https://github.com/firecrawl/opencode-firecrawl)                              | Web scraping, crawling, and search via the Firecrawl CLI                                           |
 | [opencode-jfrog-plugin](https://github.com/jfrog/opencode-jfrog-plugin)                            | JFrog Plugin for seamless integration of Opencode users to JFrog platform                          |
 | [opencode-goal-plugin](https://github.com/willytop8/OpenCode-goal-plugin)                          | Session-scoped `/goal` workflow that keeps objectives in context and auto-continues until complete |
+| [opencode-tavily](https://github.com/tavily-ai/opencode-tavily)                                    | Web search, extraction, crawling, and deep research via the Tavily CLI                             |
 
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