feat: add lua binding for mtype_id

[NappingOcean]

Purpose of change (The Why)

mtype_id would make lua more useful! Such as spawning monster instantly, making a corpse not human but other monster, or ugh, getting monster id from corpse. It might be useful on sometime or later....

Describe the solution (The How)

Add new binding for mtype_id with following guide

Describe alternatives you've considered

Testing

Additional context

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.
• This PR modifies BN's lua API.
• I have committed the output of deno task doc so the Lua API documentation is updated.

[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]

stupid me