Function safe_app::ffi::mutable_data::mdata_list_user_permissions

#[no_mangle]
pub unsafe extern "C" fn mdata_list_user_permissions(
    app: *const App, 
    info: *const MDataInfo, 
    user_h: SignPubKeyHandle, 
    user_data: *mut c_void, 
    o_cb: extern "C" fn(user_data: *mut c_void, result: *const FfiResult, perm_set: *const PermissionSet)
)

Get list of permissions set on the mutable data for the given user.

User is either handle to a signing key or USER_ANYONE.

Callback parameters: user data, error code, permission set handle