Initial data commit

Task/Call-a-function/Ecstasy/call-a-function-7.ecstasy

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+module ObtainReturnValues {
+    (Int, String, Dec) foo() {
+        return 3, "hello!", 9.87;
+    }
+
+    void run() {
+        foo();                                  // ignore return values
+        Int i1 = foo();                         // only use first returned value
+        (Int i2, String s2) = foo();            // only use first two returned values
+        (Int i3, String s3, Dec d3) = foo();    // use all returned values
+        Tuple<Int, String, Dec> t   = foo();    // alternatively, get the tuple instead
+
+        @Inject Console console;
+        console.print($"{i3=}, {s3=}, {d3=}, {t=}");
+    }
+}