[Sky Island] Require the player to examine the statue to receive warp shards

[thaelina]

Summary

Mods "[Sky Island] Require the player to examine the statue to receive warp shards"

Purpose of change

Previously, warp shards were lying on the ground for the Find Warp Shards mission. This required the player to walk over to them and pick them up. When implementing challenge mode, I changed the mission to complete when the player got close enough since the previous method wasn't able to be adjusted on the fly for Challenge mode.
Since these missions can spawn inside of houses that have zeds, this reintroduces the danger associated with those locations.

Describe the solution

Change the MISSION_BONUS_TREASURE end effect to just a simple message telling the player they have to find a way to get the shards from the statue. This should naturally lead them to examine the statue. The statue description clearly states there are warp shards in the palm of its hand.
Using the examine actions on the f_warpshardrewardstatue warp shard statue will fire an EOC that performed the same actions as the mission completion used to and execute a ter_furn_transform to change the statue into a new one with a description change to indicate it no longer has the shards.

Describe alternatives you've considered

Testing

Game loads, mission is generated as normal, statue grants shards and transforms as expected.

Additional context

[github-actions]

Auto-requesting reviews from non-collaborators: @gettingusedto

[github-actions]

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

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• "You retreieved the warp shards from the statue."

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.

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