* SteelSeries Arctis 1: battery support

Battery requesting code from  SteelSeries Arctis 1 Wireless for XBOX
works just fine for my SteelSeries Arctis 1 Wireless.

* Merge SteelSeries Arctis 1 drivers

Now SteelSeries Arctis 1 and SteelSeries Arctis 1 for XBox
differ only in function naming and device IDs, there is no
reason to keep two separate drivers for these two devices.

* Add support for Logitech G433 (Sidetone)

Supports headset battery status, setting timeout, and setting
sidetone values.

Closes #151

Seems like they should be mentioned along with the other options.

(Plus two trivial fixups.)

I think it's identical or very nearly identical to the Zone Wired,
so this patch just adds another product id to the existing device.

I tested it with my headset and I can confirm the sidetone level,
the voice prompt toggle, and the rotate to mute toggle, all work for
me as expected.

(The part number for the Zone 750 according to logitech.com is
981-001103. There are two part numbers for the Zone Wired, "UC Zone
Wired", 981-000876, and "MSFT Teams Zone Wired", 981-000871.)

Added Roccat-Elo 7.1 USB and LED lights toggle

Co-authored-by: Goto Dengo <[email protected]>

The previous install method didn't obey the `DESTDIR` make variable,
used to make packages in a different root tree; it was silently
failing to install if no permissions were given.

Also, the install destination was not standard, since packages should
place their udev rules at `lib/udev/rules.d`, while the `/etc` prefix is
reserved for custom system modifications.

This patch fixes both issues.