Use gpgme for gpg detector, misc style fixes

[mochaaP]

use gpgme for gpg detector
move ssh socket to ~ suffix

[mochaaP]

the hmac watcher could be migrated to use ykpers, but i don't have a setup to test for that

[maximbaz]

Thanks for the PR! It's a very interesting idea to use gpgme, it certainly makes it somewhat less hacky 😁

I only have a single comment, a proposal to fix the app occasionally hang.

[maximbaz]

the hmac watcher could be migrated to use ykpers, but i don't have a setup to test for that

Admittedly I don't use it myself either, but I believe it's as easy to set it up as to follow this:

$ ykman config usb -e OTP # enable OTP if you have it disabled
$ ykman otp chalresp --touch --generate 2 # generate a new random key in slot 2
$ ykman otp calculate 2 # when asked, give it any value (e.g. 00), then this will require touch

Interestingly, the current code does not detect the need to touch yubikey (for me). I don't know if it regressed (nobody opened an issue!), a quirk of my personal computer, or an issue in the setup above. But if you want to try it out, give it a go 😁

[mochaaP]

revised with the suggestions.

[mochaaP]

ssh watcher could potentially use the sock_diag subsystem of netlink, but i couldn't find a good enough wrapper for that in golang.
I guess the current method is the way forward, keep it as is

[maximbaz]

FYI I doubled the timings, because I experienced sporadic false positives when executing gpg sign operations, which do not require a touch, but just because they are slow, they triggered yubikey-touch-detector's notification.

We might have to increase them even more, if people report that on their computers they still get false positives...

I also cut 1.11.0 release, so you can just take the latest tag for packaging 😉