Add intToString() and stringToInt() functions

src/solstice_stdlib.cpp

@@ -28,6 +28,22 @@ def println(string msg) string {
     return msg
 }
 
+def stringToInt(string in) int {
+    result = 0
+    ground {
+        stoi $in &result
+    }
+    return result
+}
+
+def intToString(int in) string {
+    result = ""
+    ground {
+        tostring $in &result
+    }
+    return result
+}
+
 // End Solstice stdlib
 
     )";

tests/convert.sols

@@ -0,0 +1,8 @@
+myString = "312"
+myInt = 435
+
+myNewString = intToString(myInt)
+myNewInt = stringToInt(myString)
+
+println(myNewString)
+puts myNewInt