feat: add map support and tuple deconstruction in let

examples/sample/validators/swap.ak

@@ -1,7 +1,13 @@
 use sample
 
 pub fn spend(datum: sample.Datum, rdmr: sample.Redeemer, _ctx: Nil) -> Bool {
-  let x = #(datum, rdmr, #[244])
+  let x = #(datum,  #[244])
 
-  datum.random == rdmr.signer
+  let y = [#(#[222], #[222]), #(#[233], #[52])]
+
+  let [z, f, ..g] = y
+
+  let #(a, b) = x
+
+  z == #(#[222], #[222])
 }