Pull request #3904: ips_options: add gadget check for vba_data

Pull request #3904: ips_options: add gadget check for vba_data

Merge in SNORT/snort3 from ~ASERBENI/snort3:vba_null_gadget to master

Squashed commit of the following:

commit c9ec58b0e031465bcd69331fcef82e6dd6f03c5d
Author: Andrii Serbeniuk <aserbeni@cisco.com>
Date:   Mon Jul 10 11:53:46 2023 +0300

    ips_options: update dev_notes about IPS options input values

commit 5f6a0b16d628f524961f56f8ab68b614a39ad390
Author: Andrii Serbeniuk <aserbeni@cisco.com>
Date:   Mon Jul 10 11:18:38 2023 +0300

    ips_options: add unit tests for vba_data

commit f7e319f06441b476463a2b64e786330c0a24425a
Author: Andrii Serbeniuk <aserbeni@cisco.com>
Date:   Mon Jul 10 11:17:45 2023 +0300

    ips_options: add gadget check for vba_data