[Quest API] Add Spell Blocked Event to Perl/Lua (#4217)

* [Spells] Add Unblockable Spell Table and Spell Blocked Event

- Add `EVENT_SPELL_BLOCKED`, exports `$blocking_spell_id`, `$cast_spell_id`, `$blocking_spell`, and `$cast_spell`.

- Add `event_spell_blocked`, exports `e.blocking_spell_id`, `e.cast_spell_id`, `e.blocking_spell`, and `e.cast_spell`.

- Adds `spells_unblockable` table with a `spell_id` and `is_unblockable` column.
- This table will need to be populated based on known spells that should be unblockable.

- This event will allow operators to perform events when spells are blocked.

* Cleanup

* Cleanup

* Update spells.cpp

* Remove unused repositories.

* Finalize

* Update lua_parser_events.cpp

common/shareddb.cpp

@@ -1854,9 +1854,9 @@ void SharedDatabase::LoadSpells(void *data, int max_spells) {
 		sp[tempid].min_range = Strings::ToFloat(row[231]);
 		sp[tempid].no_remove = Strings::ToBool(row[232]);
 		sp[tempid].damage_shield_type = 0;
-    }
+	}
 
-    LoadDamageShieldTypes(sp, max_spells);
+	LoadDamageShieldTypes(sp, max_spells);
 }
 
 void SharedDatabase::LoadCharacterInspectMessage(uint32 character_id, InspectMessage_Struct* message) {