add dnscrypt proxy services

Thanks @Fusl

Fixes #63

etc/systemd/system/dnscrypt/dnscrypt-proxy4.service

@@ -1,9 +1,9 @@
 [Unit]
 Description=DNSCrypt client proxy
-Requires=dnscrypt-proxy.socket
+Requires=dnscrypt-proxy4.socket
 
 [Install]
-Also=dnscrypt-proxy.socket
+Also=dnscrypt-proxy4.socket
 WantedBy=multi-user.target
 
 [Service]

etc/systemd/system/dnscrypt/dnscrypt-proxy4.socket

@@ -0,0 +1,11 @@
+[Unit]
+Description=dnscrypt-proxy listening socket
+After=network-online.target
+
+[Socket]
+ListenStream=127.0.0.1:55
+ListenDatagram=127.0.0.1:55
+
+[Install]
+WantedBy=sockets.target
+

etc/systemd/system/dnscrypt/dnscrypt-proxy6.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=DNSCrypt client proxy
+Requires=dnscrypt-proxy6.socket
+
+[Install]
+Also=dnscrypt-proxy6.socket
+WantedBy=multi-user.target
+
+[Service]
+Type=simple
+NonBlocking=true
+ExecStart=/usr/bin/dnscrypt-proxy -r 2a03:e581:4:a1::5:443 -k 8458:11E2:D322:DAA3:1544:960B:F6C3:000E:910A:C1A6:DE38:8D94:BD1D:EDEA:B60F:0560 -N 2.dnscrypt-cert.fvz-rec-fi-ulv-01.dnsrec.meo.ws