chore: flatten Altoholic-Addon/ wrapper + add standard .gitignore/.gitattributes

Each DataStore_* / Altoholic_* addon now lives at the repo root, matching
the Exiles fork-layout convention (one folder per addon, no wrapper dir).

DataStore_Spells/DataStore_Spells.toc

@@ -0,0 +1,16 @@
+## Interface: 30300
+## Title: DataStore_Spells
+## Notes: Stores information about character spells
+## Author: Thaoky (EU-Marécages de Zangar)
+## Version: 3.3.001
+## Dependencies: DataStore
+## OptionalDeps: Ace3
+## SavedVariables: DataStore_SpellsDB
+## X-Category: Interface Enhancements
+## X-Embeds: Ace3
+## X-Curse-Packaged-Version: r8
+## X-Curse-Project-Name: DataStore_Spells
+## X-Curse-Project-ID: datastore_spells
+## X-Curse-Repository-ID: wow/datastore_spells/mainline
+
+DataStore_Spells.lua