feat(port): add travel_to_dimension

[NappingOcean]

Purpose of change (The Why)

We want to go further world. Further and further, even another dimension.
This PR will bring us isekai.

Describe the solution (The How)

Ported over CleverRaven/Cataclysm-DDA#82924
Added travel_to_dimension method and the tag for region_settings, and implemented forgetting the world you saw and saving the world where we come back after, etc.

Describe alternatives you've considered

Screm

Testing

Not yet.

Additional context

I hope that this PR can help sky island project(#7652).

Checklist

Mandatory

• I wrote the PR title in conventional commit format.
• I ran the code formatter.
• I linked any relevant issues using github keyword syntax like closes #1234 in Summary of the PR so it can be closed automatically.
• I've committed my changes to new branch that isn't main so it won't cause conflict when updating main branch later.

Optional

• This PR ports commits from DDA or other cataclysm forks.
  • I have added port scope to the PR title.
  • I have attributed original authors in the commit messages adding Co-Authored-By in the commit message.
  • I have linked the URL of original PR(s) in the description.
• This is a C++ PR that modifies JSON loading or behavior.
  • I have documented the changes in the appropriate location in the docs/ folder.
  • If documentation for this feature does not exist, please write it or at least note its lack in PR description.
  • New localizable fields need to be added to the lang/bn_extract_json_strings.sh script if it does not support them yet.
  • If applicable, add checks on game load that would validate the loaded data.
  • If it modifies format of save files, please add migration from the old format.
• This PR modifies lua scripts or the lua API.
  • I have added lua scope to the PR title.
  • I have added type annotations to functions so that it's safe and easy to maintain.
  • I have committed the output of deno task docs:gen so the Lua API documentation is updated.

[NappingOcean]

Still have problems for travelling with a vehicle. Aggghhh

[NappingOcean]

I have thought this issue for a while, and decided to postpone this vehicle issue later. It would be better to implement the main feature first and then implement the rest one by one later.

[AzmodiusX]

It compiles and runs.
I verified that the pocket watch works.
It also doesn't work if I use the watch for the dimension I'm in.
I do note the overmap desert just shows "field" for desert tiles, but it seems to not be an error, per se.
Not approval because draft and we need to make decisions.

[AzmodiusX]

DEBUG    : requested mission with uid 1 does not exist
FUNCTION : find
FILE     : F:\Cataclysm\Cataclysm-BN\src\mission.cpp
LINE     : 78
VERSION  : BN 0.E-9149-gb411d2d778 (2026-02-05)

Didn't happen the first time, but now 2 times in a row.
New game
Same world
Only occurs in a world I made before rebuilding.
Can't replicate.
Fixed after regenerating world.
???

[AzmodiusX]

Hey, this got sidelined for a decent amount of time.
Do you mind if I start pushing to this myself?
I'd lots of people are hype about this and I want to get it working sooner rather than later.

[autofix-ci]

Autofix has formatted code style violation in this PR.

I edit commits locally (e.g: git, github desktop) and want to keep autofix

1. Run git pull. this will merge the automated commit into your local copy of the PR branch.
2. Continue working.

I do not want the automated commit

1. Format your code locally, then commit it.
2. Run git push --force to force push your branch. This will overwrite the automated commit on remote with your local one.
3. Continue working.

If you don't do this, your following commits will be based on the old commit, and cause MERGE CONFLICT.

[NappingOcean]

@AzmodiusX Sorry. I was busy IRL so forgot this.
If you want to push, please go ahead. Just let me know what should I do.