Convert @bugsnag/plugin-simple-throttle to TypeScript (#2242)

* update rollup configuration

* convert plugin-simple-throttle to typescript

* fix: int-range

---------

Co-authored-by: Ben Wilson <ben.wilson@smartbear.com>

Author: AnastasiiaSvietlova

packages/plugin-window-onerror/rollup.config.npm.mjs

@@ -2,4 +2,4 @@ import createRollupConfig from '../../.rollup/index.mjs'
 
 export default createRollupConfig({
     input: 'src/onerror.ts'
-})
+})