Add python3 and script to NDK

Issue: https://gitee.com/openharmony/third_party_musl/issues/I7KK3D
Test: no need
Signed-off-by: Nhongtao <hongtao11@huawei.com>
Change-Id: I8cc5fe424b45d7cab211f1c2fd3e433770391003

ndk_script/BUILD.gn

@@ -39,6 +39,8 @@ if (host_os == "mac") {
       "${darwin_system_toolchains_dir}/llvm/include",
       "${darwin_system_toolchains_dir}/llvm/lib",
       "${darwin_system_toolchains_dir}/llvm/libexec",
+      "${darwin_system_toolchains_dir}/llvm/python3",
+      "${darwin_system_toolchains_dir}/llvm/script",
       "${darwin_system_toolchains_dir}/llvm/share",
     ]
     license_file = "${darwin_system_toolchains_dir}/llvm/NOTICE"
@@ -68,6 +70,8 @@ if (host_os == "mac") {
       "${linux_x86_64_toolchains_dir}/llvm/include",
       "${linux_x86_64_toolchains_dir}/llvm/lib",
       "${linux_x86_64_toolchains_dir}/llvm/libexec",
+      "${linux_x86_64_toolchains_dir}/llvm/python3",
+      "${linux_x86_64_toolchains_dir}/llvm/script",
       "${linux_x86_64_toolchains_dir}/llvm/share",
     ]
     license_file = "${linux_x86_64_toolchains_dir}/llvm/NOTICE"
@@ -81,6 +85,7 @@ if (host_os == "mac") {
       "${windows_x86_64_toolchain_dir}/llvm/include",
       "${windows_x86_64_toolchain_dir}/llvm/lib",
       "${windows_x86_64_toolchain_dir}/llvm/libexec",
+      "${windows_x86_64_toolchain_dir}/llvm/script",
       "${windows_x86_64_toolchain_dir}/llvm/share",
     ]
     args = [ "--follow-all-symlinks" ]