[Ohrrpgce] wip r14199: Add "next zone tile x/y"

[cron at rpg.hamsterrepublic.com]

https://github.com/ohrrpgce/ohrrpgce/commit/22f3aafbbca9b0fe5828d0f05639748dfae26154
Author: teeemcee <teeemcee at 7d344553-34f0-0310-a9b1-970ce8f1c3a2>
Date:   Sat Jan 3 12:45:59 2026 +0000

    Add "next zone tile x/y"
    

 const.bi                              |   2 +-
 docs/platformdict.xml                 |   2 +-
 docs/plotdict.xml                     |  56 ++++++++++++++++++-
 docs/plotdictionary.html              | 101 +++++++++++++++++++++++++++++++---
 loading.bi                            |   1 +
 loading.rbas                          |  21 +++++++
 plotscr.hsd                           |   7 ++-
 scriptcommands.bas                    |  14 +++--
 testgame/autotest.hsi                 |   1 +
 testgame/autotest.hss                 |  29 ++++++++++
 testgame/autotest.rpgdir/general.reld | Bin 38002 -> 38243 bytes
 testgame/autotest.rpgdir/ohrrpgce.hsp | Bin 1333851 -> 1340604 bytes
 whatsnew.txt                          |   1 +
 13 files changed, 217 insertions(+), 18 deletions(-)