feat(furnidata): seed furnidata feature config keys (021 migration)

The names-server + watch + import config keys read by FurnitureTextProvider /
FurnidataWatcher / FurniEditorImportTextEvent were never seeded — a fresh
install logged 'Config key not found' for each and they were not DB-editable.
Seed portable defaults (items.furnidata.path empty → derives from
furni.editor.asset.base.path; booleans true/false; import URL = habbo.it).

Database Updates/Own_Database_RunFirst/021_furnidata_config.sql

@@ -0,0 +1,27 @@
+-- 021_furnidata_config.sql
+-- Seeds the furnidata feature config keys read at runtime by
+-- FurnitureTextProvider / FurnidataReader / FurnidataWatcher and
+-- FurniEditorImportTextEvent. Without these rows a fresh install logs
+-- "Config key not found" for each (ConfigurationManager logs ERROR even
+-- when a default is supplied) and the values are not editable from the DB.
+--
+-- Notes:
+--  * *.enabled keys are read via Boolean.parseBoolean → use true/false (NOT 1/0).
+--  * items.furnidata.path is intentionally empty: when blank the source is
+--    derived from furni.editor.asset.base.path (seeded by 004_furni_editor.sql)
+--    → <base>/furnidata (split-tier) or <base>/FurnitureData.json (single file).
+--  * Editor write-path keys (items.furnidata.edit.*) are seeded by 020.
+
+INSERT IGNORE INTO `emulator_settings` (`key`,`value`) VALUES
+-- Server-authoritative furni names (source of truth = furnidata JSON)
+('items.furnidata.names.enabled','true'),
+('items.furnidata.path',''),
+('items.furnidata.max.bytes','67108864'),
+-- Live-reload watcher
+('items.furnidata.watch.enabled','true'),
+('items.furnidata.watch.debounce.ms','750'),
+('items.furnidata.watch.min.interval.ms','5000'),
+('items.furnidata.delta.cap','500'),
+-- Furni editor: import official names/descriptions from Habbo
+('furni.editor.import.url','https://www.habbo.it/gamedata/furnidata_json/1'),
+('furni.editor.import.cache.ms','600000');