Make HTTP requests from inside WASM in Berry-lang

This devcontainer is configured to provide you the latest stable version of Emscripten.

#	Example	Description	Browser demo
1	EMSCRIPTEN_FETCH_SYNCHRONOUS	Berry "native" function employing sync XHR	Demo
2	EMSCRIPTEN_FETCH_SYNCHRONOUS with enabled ASYNCIFY	Berry "native" function employing sync XHR, built with ASYNCIFY support. Resulting WASM file is 650k larger.	Demo

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