Fix/tpos tips #697 (#713)

* small fastapi convertion

* make tip add up to invoice

* make tip add to invoice

* display existing tpos

* clean console logs

* suggestion from @leesalminen

* blacked

lnbits/extensions/tpos/views_api.py

@@ -17,7 +17,7 @@ from .models import CreateTposData
 
 @tpos_ext.get("/api/v1/tposs", status_code=HTTPStatus.OK)
 async def api_tposs(
-    all_wallets: bool = Query(None), wallet: WalletTypeInfo = Depends(get_key_type)
+    all_wallets: bool = Query(False), wallet: WalletTypeInfo = Depends(get_key_type)
 ):
     wallet_ids = [wallet.wallet.id]
     if all_wallets:
@@ -63,6 +63,9 @@ async def api_tpos_create_invoice(
             status_code=HTTPStatus.NOT_FOUND, detail="TPoS does not exist."
         )
 
+    if tipAmount:
+        amount += tipAmount
+
     try:
         payment_hash, payment_request = await create_invoice(
             wallet_id=tpos.wallet,