Fix function type not set issue of aot_call_indirect (#229)

Add registration of libc-wasi to 'wasi_snapshot_preview1' to support cargo-wasi
change zephyr build method from cmake to west
fix problem when preserve space for local vars
fix wasi authority problem

samples/basic/build.sh

@@ -44,6 +44,7 @@ OUT_FILE=${i%.*}.wasm
         -Wl,--no-threads,--strip-all,--no-entry -nostdlib \
         -Wl,--export=generate_float \
         -Wl,--export=float_to_string \
+        -Wl,--export=calculate\
         -Wl,--allow-undefined \
         -o ${OUT_DIR}/wasm-apps/${OUT_FILE} ${APP_SRC}