Added timestamp and endless

For future culling of links. If endless is not specified, then links older than x could be removed

lnbits/core/migrations.py

@@ -273,10 +273,12 @@ async def m008_create_admin_settings_table(db):
 
 async def m009_create_tinyurl_table(db):
     await db.execute(
-        """
+        f"""
         CREATE TABLE IF NOT EXISTS tiny_url (
           id TEXT PRIMARY KEY,
-          url TEXT
+          url TEXT,
+          endless BOOL NOT NULL DEFAULT false,
+          time TIMESTAMP NOT NULL DEFAULT {db.timestamp_now},
         );
     """
     )

lnbits/core/models.py

@@ -218,6 +218,8 @@ class BalanceCheck(BaseModel):
 class TinyURL(BaseModel):
     id: str
     url: str
+    endless: bool
+    time: float
 
     @classmethod
     def from_row(cls, row: Row):