feat: add for.zig

for.zig

@@ -0,0 +1,8 @@
+const print = @import("std").debug.print;
+
+pub fn main() void {
+  const string = [_]u8{ 'a', 'b', 'c' };
+  for (string) |character, index| {
+    print("{} - {}\n", .{index, character});
+  }
+}