Disable measurement available check in ddlpy.measurements()

[veenstrajelmer]

• ddlpy version: main
• Python version: 3.11
• Operating System: Windows

Description

As reported in #46, the check whether measurements are available does not always work. This is done before retrieving measurements since #33. We will temporarily disable this feature again, to avoid measurements that are available to not be retrieved. When this issue is fixed in the ddl, we can re-enable it again as part of #46.

Also make measurements_available public.