Add tasks for all the new languages

Task/Currying/Eero/currying-1.eero

@@ -0,0 +1,14 @@
+#import <stdio.h>
+
+int main()
+
+  addN := (int n)
+    int adder(int x)
+      return x + n
+    return adder
+
+  add2 := addN(2)
+
+  printf( "Result = %d\n", add2(7) )
+
+  return 0

Task/Currying/Eero/currying-2.eero

@@ -0,0 +1,12 @@
+#import <stdio.h>
+
+int main()
+
+  addN := (int n)
+    return (int x | return x + n)
+
+  add2 := addN(2)
+
+  printf( "Result = %d\n", add2(7) )
+
+  return 0