Extract trap memorial and trigger messages for translation

[BrettDong]

Summary

None

Purpose of change

memorial_male, memorial_female, trigger_message_u and trigger_message_npc are not extracted for translation in trap JSON definition:

{
    "//": "We're always going to need a 'nothing here' tile, we currently use traps for this.",
    "type": "trap",
    "id": "tr_ledge",
    "name": "ledge",
    "color": "i_cyan",
    "memorial_male": { "ctxt": "memorial_male", "str": "Fell down a ledge." },
    "memorial_female": { "ctxt": "memorial_female", "str": "Fell down a ledge." },
    "symbol": " ",
    "visibility": 0,
    "avoidance": 99999,
    "difficulty": 99,
    "action": "ledge",
    "vehicle_data": { "is_falling": true },
    "trigger_message_u": "You fell down a ledge!",
    "trigger_message_npc": "<npcname> fell down a ledge!"
  }

Describe the solution

Update string extractor script.

Describe alternatives you've considered

Testing

See new text appear in the generated translation template after the patch:

#. ~ Memorial message of trap "ledge"
#: data/core/traps.json
msgctxt "memorial_male"
msgid "Fell down a ledge."
msgstr ""

#. ~ Memorial message of trap "ledge"
#: data/core/traps.json
msgctxt "memorial_female"
msgid "Fell down a ledge."
msgstr ""

#. ~ Message when player triggers trap "ledge"
#: data/core/traps.json
msgid "You fell down a ledge!"
msgstr ""

#. ~ Message when NPC triggers trap "ledge"
#: data/core/traps.json
msgid "<npcname> fell down a ledge!"
msgstr ""

Additional context

[github-actions]

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

Click to expand

• Triggered a teleport trap.

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.