Pull request #3722: Add benchmark tests for PDF parser.

Pull request #3722: Add benchmark tests for PDF parser.

Merge in SNORT/snort3 from ~OSHUMEIK/snort3:jsn_pdf_bench to master

Squashed commit of the following:

commit 53ece926c098ed146e9e8e284c506767dabf2c64
Author: Oleksii Shumeiko <oshumeik@cisco.com>
Date:   Thu Dec 22 16:02:17 2022 +0200

    js_norm: delete unused method

commit f0c0270b07fa72676a91382cea44ea69baaf5d17
Author: Oleksii Shumeiko <oshumeik@cisco.com>
Date:   Wed Dec 21 10:49:36 2022 +0200

    js_norm: tune PDF parser performance

    Decrease data chunk size.

commit 97a247bc3236a27a8a91c9b6067214c5fb9333c3
Author: Oleksii Shumeiko <oshumeik@cisco.com>
Date:   Thu Dec 15 15:03:01 2022 +0200

    js_norm: add benchmark tests for PDF parser