cmake llamacpp examples

fluent/fluent-bit lib/wasm-micro-runtime-WAMR-2.4.1/core/iwasm/libraries/wasi-nn/cmake/wasi_nn.cmake :86

find_package(llamacpp REQUIRED)

bytecodealliance/wasm-micro-runtime core/iwasm/libraries/wasi-nn/cmake/wasi_nn.cmake :86

find_package(llamacpp REQUIRED)