build: embed udev rules in the binary

It is nice if the program can emit its own udev file.

src/main.zig

@@ -4,6 +4,8 @@ const Config = @import("./Config.zig");
 const lj = @import("./labjack.zig");
 const RotCtl = @import("./RotCtl.zig");
 
+const udev = @import("udev_rules");
+
 const log = std.log.scoped(.main);
 
 pub fn main() !u8 {