feat: add read-only params to sign templates (#400)

openapi.json

@@ -14,7 +14,7 @@
       "url": "http://www.apache.org/licenses/LICENSE-2.0"
     },
     "version": "2.0.0",
-    "x-box-commit-hash": "d3a7365495"
+    "x-box-commit-hash": "ee67564780"
   },
   "servers": [
     {
@@ -33160,6 +33160,11 @@
                 "description": "The label field is used especially for text, attachment, radio, and checkbox type inputs.",
                 "nullable": true,
                 "example": "Legal name"
+              },
+              "read_only": {
+                "type": "boolean",
+                "description": "Whether this input was defined as read-only(immutable by signers) or not",
+                "example": true
               }
             }
           }
@@ -37459,6 +37464,11 @@
                 "type": "integer",
                 "description": "Index of page that the input is on",
                 "example": 4
+              },
+              "read_only": {
+                "type": "boolean",
+                "description": "Whether this input was defined as read-only(immutable by signers) or not",
+                "example": true
               }
             }
           }