More console work

[rr-]

Checklist

• I have read the coding conventions
• I have added a changelog entry about what my pull request accomplishes, or it is an internal change

Description

LostArtefacts/libtrx#40

[aredfan]

The /endlevel command reports success on the title screen when following these steps:

1. /play 0
2. /title
3. /endlevel

---

/load x doesn't seem to work for me. The message I'm getting is Save slot x is not available.

[rr-]

The /endlevel command reports success on the title screen when following these steps:

1. /play 0
2. /title
3. /endlevel

/load x doesn't seem to work for me. The message I'm getting is Save slot x is not available.

Thanks – fixed both issues.