docs: Add JSR badges

Author: takker99

README.md

@@ -1,5 +1,9 @@
 ## @cosense/types
 
+[![JSR](https://jsr.io/badges/@cosense/types)](https://jsr.io/@cosense/types)
+[![test](https://github.com/scrapbox-jp/types/workflows/ci/badge.svg)](https://github.com/scrapbox-jp/types/actions?query=workflow%3Aci)
+
+
 Type definitions for [cosense](https://cosen.se)
 
 ## Getting Started