adds Num.subChecked

compiler/module/src/low_level.rs

@@ -32,6 +32,7 @@ pub enum LowLevel {
     NumAddChecked,
     NumSub,
     NumSubWrap,
+    NumSubChecked,
     NumMul,
     NumGt,
     NumGte,

compiler/module/src/symbol.rs

@@ -799,6 +799,7 @@ define_builtins! {
         56 NUM_ASIN: "asin"
         57 NUM_BITWISE_AND: "bitwiseAnd"
         58 NUM_SUB_WRAP: "subWrap"
+        59 NUM_SUB_CHECKED: "subChecked"
     }
     2 BOOL: "Bool" => {
         0 BOOL_BOOL: "Bool" imported // the Bool.Bool type alias