feat: add opt tos

06.md

@@ -44,6 +44,7 @@ With the mint's response being of the form `GetInfoResponse`:
     "http://mint8gv0sq5ul602uxt2fe0t80e3c2bi9fy0cxedp69v1vat6ruj81wv.onion"
   ],
   "time": 1725304480,
+  "tos": "Terms of Service of the mint.",
   "nuts": {
     "4": {
       "methods": [
@@ -96,6 +97,7 @@ With the mint's response being of the form `GetInfoResponse`:
 - (optional) `icon_url` is the URL pointing to an image to be used as an icon for the mint. Recommended to be squared in shape.
 - (optional) `urls` is the list of endpoint URLs where the mint is reachable from.
 - (optional) `time` is the current time set on the server. The value is passed as a Unix timestamp integer.
+- (optional) `tos` is the Terms of Service of the mint.
 - (optional) `nuts` indicates each NUT specification that the mint supports and its settings. The settings are defined in each NUT separately.
 
 With curl: