add ex083 anon lists

exercises/083_anonymous_lists.zig

@@ -0,0 +1,25 @@
+//
+// Anonymous struct literal syntax can also be used to compose an
+// "anonymous list" with an array type destination:
+//
+//     const foo: [3]u32 = .{10, 20, 30};
+//
+// Otherwise it's a "tuple":
+//
+//     const bar = .{10, 20, 30};
+//
+// The only difference is the destination type.
+//
+const print = @import("std").debug.print;
+
+pub fn main() void {
+    // Please make 'hello' a string-like array of u8 WITHOUT
+    // changing the value literal.
+    //
+    // Don't change this part:
+    //
+    //     = .{'h', 'e', 'l', 'l', 'o'};
+    //
+    const hello = .{'h', 'e', 'l', 'l', 'o'};
+    print("I say {s}!\n", .{hello});
+}