Add PlutusV3 conformance tests and also control budgets

There were some odd discrepancy for `integerToByteString` on the mem
  side. Either 1 or about 1000 mem units off; which I couldn't quite
  figure out. Yet, it proves useful to validate builtin at large and
  ensure we have a valid cost model for v3.

crates/uplc/src/ast.rs

@@ -878,9 +878,13 @@ impl Program<NamedDeBruijn> {
 impl Program<DeBruijn> {
     pub fn eval(&self, initial_budget: ExBudget) -> EvalResult {
         let program: Program<NamedDeBruijn> = self.clone().into();
-
         program.eval(initial_budget)
     }
+
+    pub fn eval_version(self, initial_budget: ExBudget, version: &Language) -> EvalResult {
+        let program: Program<NamedDeBruijn> = self.clone().into();
+        program.eval_version(initial_budget, version)
+    }
 }
 
 impl Term<NamedDeBruijn> {