schemas: add uintDecimal

Author: fjl

src/schemas/base-types.yaml

@@ -60,6 +60,10 @@ uint256:
   title: hex encoded 256 bit unsigned integer
   type: string
   pattern: ^0x(0|[1-9a-f][0-9a-f]{0,63})$
+uintDecimal:
+  title: decimal unsigned integer string
+  type: string
+  pattern: ^[1-9][0-9]*$
 hash32:
   title: 32 byte hex value
   type: string