feat: resolve spell cast time and range from DBC for GetSpellInfo

Add SpellDataResolver that lazily loads Spell.dbc, SpellCastTimes.dbc,
and SpellRange.dbc to provide cast time and range data. GetSpellInfo()
now returns real castTime (ms), minRange, and maxRange instead of
hardcoded 0 values.

This enables spell tooltip addons, cast bar addons (Quartz), and range
check addons to display accurate spell information. The DBC chain is:
  Spell.dbc[CastingTimeIndex] → SpellCastTimes.dbc[Base ms]
  Spell.dbc[RangeIndex] → SpellRange.dbc[MinRange, MaxRange]

Follows the same lazy-loading pattern as SpellIconPathResolver and
ItemIconPathResolver.

src/addons/lua_engine.cpp

@@ -990,9 +990,11 @@ static int lua_GetSpellInfo(lua_State* L) {
     std::string iconPath = gh->getSpellIconPath(spellId);
     if (!iconPath.empty()) lua_pushstring(L, iconPath.c_str());
     else lua_pushnil(L);                                     // 3: icon texture path
-    lua_pushnumber(L, 0);                                    // 4: castTime (ms) — not tracked
-    lua_pushnumber(L, 0);                                    // 5: minRange
-    lua_pushnumber(L, 0);                                    // 6: maxRange
+    // Resolve cast time and range from Spell.dbc → SpellCastTimes.dbc / SpellRange.dbc
+    auto spellData = gh->getSpellData(spellId);
+    lua_pushnumber(L, spellData.castTimeMs);                 // 4: castTime (ms)
+    lua_pushnumber(L, spellData.minRange);                   // 5: minRange (yards)
+    lua_pushnumber(L, spellData.maxRange);                   // 6: maxRange (yards)
     lua_pushnumber(L, spellId);                              // 7: spellId
     return 7;
 }