Add Kantele + Minor fixes

[ANickelN]

Summary

Content "Adds kantele"

Purpose of change

Got to listen to one of these in person the other day, and felt like adding it to the game. More variety in instruments never hurt. Adds looks_like values to instruments after I noticed a lot of missing tiles playing with UltiCata.

Describe the solution

Adds the kantele, allowing it to spawn rarely in music stores and very rarely in house bedrooms.

Describe alternatives you've considered

Having a little less music in the world?

Testing

Loaded the game, spawned 15 music stores and found only 3 kantele.
Picked one up, it has correct weight and dimensions, playing it makes the proper text appear in the log.

Additional context

This might be a fun instrument for one of the magic mods to use. Kantele myth is heavily associated with spellcasting.

[github-actions]

Spell checker encountered unrecognized words in the in-game text added in this pull request. See below for details.

Click to expand

• A traditional Finnish string instrument. According to myth the first one was fashioned from a great pike's bone. This ordinary wooden one doesn't seem quite as special.
• kantele
• kanteles

This alert is automatically generated. You can simply disregard if this is inaccurate, or (optionally) you can also add the new words to tools/spell_checker/dictionary.txt so they will not trigger an alert next time.