Add tool list to toolbox package CHANGELOG

List all third-party tools included in version 0.1 of the toolbox package:
- Brave Search tool
- Firecrawl tool
- Mapbox tool
- OpenMeteo tool
- SerpApi tool
- Tavily tool
- Wikipedia tool
- YouTube Transcriber tool

Author: OskarStark

src/toolbox/CHANGELOG.md

@@ -2,4 +2,13 @@ CHANGELOG
 =========
 
 0.1
----
+---
+
+- Brave Search tool
+- Firecrawl tool
+- Mapbox tool
+- OpenMeteo tool
+- SerpApi tool
+- Tavily tool
+- Wikipedia tool
+- YouTube Transcriber tool