Enhancements to TPOS Extension

- Add new tip % option to TPOS extension.
        - When adding a new TPOS, a user can choose 1 or more tip % options to be displayed to the customer.
        - When adding a new TPOS, a user can choose a wallet to send all collected tips to.

- UI Refresh on TPOS extension.
        - Moved the share button to the top navigation, next to the TPOS name, and changed the icon to a more recognizable one.
        - Re-arranged the buttons on the keypad to be more ergonomic.

lnbits/extensions/tpos/views_api.py

@@ -52,7 +52,7 @@ async def api_tpos_delete(
 
 
 @tpos_ext.post("/api/v1/tposs/{tpos_id}/invoices", status_code=HTTPStatus.CREATED)
-async def api_tpos_create_invoice(amount: int = Query(..., ge=1), tpos_id: str = None):
+async def api_tpos_create_invoice(amount: int = Query(..., ge=1), tipAmount: int = None, tpos_id: str = None):
     tpos = await get_tpos(tpos_id)
 
     if not tpos:
@@ -65,7 +65,7 @@ async def api_tpos_create_invoice(amount: int = Query(..., ge=1), tpos_id: str =
             wallet_id=tpos.wallet,
             amount=amount,
             memo=f"{tpos.name}",
-            extra={"tag": "tpos"},
+            extra={"tag": "tpos", "tipAmount": tipAmount, "tposId": tpos_id},
         )
     except Exception as e:
         raise HTTPException(status_code=HTTPStatus.INTERNAL_SERVER_ERROR, detail=str(e))
@@ -84,6 +84,7 @@ async def api_tpos_check_invoice(tpos_id: str, payment_hash: str):
         )
     try:
         status = await api_payment(payment_hash)
+
     except Exception as exc:
         print(exc)
         return {"paid": False}