add string comparison and int comparison

examples/sample/src/sample.ak

@@ -6,7 +6,10 @@ pub type Datum {
   something: String,
 }
 
-pub fn thing(a: Bool) {
-    a
+pub fn eqInt(a: Int, b: Int) {
+    a == b
 }
 
+pub fn eqString(a: String, b: String) {
+    a == b
+}

examples/sample/src/scripts/swap.ak

@@ -9,9 +9,18 @@ pub type Redeemer {
 
 
 pub fn spend(datum: sample.Datum, rdmr: Redeemer, ctx: spend.ScriptContext) -> Bool {
-  let a = True
-  let b = sample.thing(a)
-  let c = sample.thing(b)
 
-  c
+  let x = "x"
+  let a = "y"
+  let b = sample.eqString(x, a)
+  let c = 1
+  let y = 1
+  let d = sample.eqInt(y, c)
+
+  if b {
+    c == 1
+  } else{
+    d
+  }
+
 }