DOC: Added *.db to the .gitignore to prevent any data from being shared.

FEAT: Updated code to start following GDPR compliance.

gdpr.py

@@ -0,0 +1,33 @@
+import aiosqlite
+
+
+async def check_consent(user_id: int) -> bool:
+    async with aiosqlite.connect("ariella.db") as db:
+        cursor = await db.execute(
+            "SELECT consent FROM user_consent WHERE user_id = ?",
+            (user_id,)
+        )
+        row = await cursor.fetchone()
+        return row and row[0] == 1
+
+
+async def give_consent(user_id: int):
+    async with aiosqlite.connect("ariella.db") as db:
+        await db.execute(
+            "INSERT OR REPLACE INTO user_consent (user_id, consent) VALUES (?, ?)",  # noqa: E501
+            (user_id, 1)
+        )
+        await db.commit()
+
+
+async def revoke_consent(user_id: int):
+    async with aiosqlite.connect("ariella.db") as db:
+        await db.execute(
+            "DELETE FROM user_consent WHERE user_id = ?",
+            (user_id,)
+        )
+        await db.execute(
+            "DELETE FROM user_notes WHERE user_id = ?",
+            (user_id,)
+        )
+        await db.commit()