Add bitcoin_transfer_methods to constants endpoint

backend/routes/meta.py

@@ -2,7 +2,13 @@
 
 from fastapi import APIRouter
 
-from models import ROLE_ADMIN, ROLE_REGULAR, InviteStatus, Permission
+from models import (
+    ROLE_ADMIN,
+    ROLE_REGULAR,
+    BitcoinTransferMethod,
+    InviteStatus,
+    Permission,
+)
 from schemas import ConstantsResponse
 
 router = APIRouter(prefix="/api/meta", tags=["meta"])
@@ -15,4 +21,5 @@ async def get_constants() -> ConstantsResponse:
         permissions=list(Permission),
         roles=[ROLE_ADMIN, ROLE_REGULAR],
         invite_statuses=list(InviteStatus),
+        bitcoin_transfer_methods=list(BitcoinTransferMethod),
     )