Comment style for Hare Language is incorrect

[perillo]

Hare, like Zig, supports C99 single line comments but does not support C multi-line comments.

Example

/*
 * SPDX-License-Identifier: BSD-3-Clause
 * SPDX-License-Identifier: BSD-4-Clause
 */

use fmt;

export fn main() void = {
	fmt::println("Hello world!")!;
}; 

$ reuse annotate --license "BSD-3-Clause" --license "BSD-4-Clause" --multi-line hare.ha

$ hare build /tmp/hare.ha                                                                                                                  [255]
0/4 tasks completed (0%)
/tmp/hare.ha:1:1: syntax error: expected 'fn', found '/'

1 |	/*
  |	^


harec for /tmp/hare.ha exited with status 1

I have a PR ready that solves the problem by adding ZigCommentStyle.