cmake EMSCRIPTEN examples

fluent/fluent-bit lib/wasm-micro-runtime-WAMR-2.4.1/samples/debug-tools/CMakeLists.txt :15 

find_package(EMSCRIPTEN 3.1.50 REQUIRED)

bytecodealliance/wasm-micro-runtime samples/debug-tools/CMakeLists.txt :15 

find_package(EMSCRIPTEN 3.1.50 REQUIRED)