[Ohrrpgce] wip r14243: Add "room for item"

[cron at rpg.hamsterrepublic.com]

https://github.com/ohrrpgce/ohrrpgce/commit/f6dc56492d962101241cae57ea512abc90fb6c55
Author: teeemcee <teeemcee at 7d344553-34f0-0310-a9b1-970ce8f1c3a2>
Date:   Sun Jan 18 05:49:50 2026 +0000

    Add "room for item"
    

 const.bi                              |   2 +-
 docs/plotdict.xml                     |  18 +++++++++++++++++-
 docs/plotdictionary.html              |  26 ++++++++++++++++++++++++--
 menustuf.rbas                         |   2 +-
 moresubs.bi                           |   2 +-
 moresubs.rbas                         |  16 ++++++----------
 plotscr.hsd                           |   1 +
 scriptcommands.bas                    |   4 ++++
 testgame/autotest.hss                 |  18 ++++++++++++++++++
 testgame/autotest.rpgdir/general.reld | Bin 38481 -> 38481 bytes
 testgame/autotest.rpgdir/ohrrpgce.hsp | Bin 1343797 -> 1345719 bytes
 whatsnew.txt                          |   3 ++-
 12 files changed, 75 insertions(+), 17 deletions(-)