Simple-to-use argument parser with struct-based config

• Automatic option generation from a config struct
• Familiar look & feel:
  • Everything after the first -- is assumed to be a positional argument
  • A single - is interpreted as a positional argument which can be used as the stdin/stdout file placeholder
  • Short options with no argument can be combined into a single argument: -dfe
  • Long options can use either --option=value or --option value syntax
• Integrated support for primitive types:
  • All integer types (signed & unsigned)
  • Floating point types
  • Booleans (takes optional argument. If no argument given, the bool is set, otherwise, one of yes, true, y, no, false, n is interpreted)
  • Strings
  • Enumerations

const options = try argsParser.parse(struct {
    // This declares long options for double hyphen
    output: ?[]const u8 = null,
    @"with-offset": bool = false,
    @"with-hexdump": bool = false,
    @"intermix-source": bool = false,
    numberOfBytes: ?i32 = null,

    // This declares short-hand options for single hyphen
    pub const shorthands = .{
        .S = "intermix-source",
        .b = "with-hexdump",
        .O = "with-offset",
        .o = "output",
    };
}, &args, argsAllocator);
defer options.deinit();

std.debug.warn("parsed result:\n{}\npositionals:\n", .{options.options});
for (options.positionals) |arg| {
    std.debug.warn("\t{}\n", .{arg});
}