net-dns/AdGuardHome: update to 0.107.57

1. Use upstream provided prebuilt frontend instead of building on our own.
   Reasons:
* one less dependency of nodejs/npm
* reduced size of distfile from 30MiB to 3MiB
* easier and faster packaging
* performance is not impacted as build output is just js/css files
* no more breakage due to changes in nodejs versions

2. updated systemd service unit to latest changes

Signed-off-by: Rahil Bhimjiani <me@rahil.rocks>

net-dns/AdGuardHome/files/AdGuardHome-0.107.57.service

@@ -0,0 +1,24 @@
+# This unit is inspired from
+# `AdGuardHome -s install` on systemd machine and
+# https://aur.archlinux.org/cgit/aur.git/tree/adguardhome.service?h=adguardhome
+
+[Unit]
+Description=Network-wide ads & trackers blocking DNS server with WebUI
+After=network-online.target
+ConditionFileIsExecutable=/usr/bin/AdGuardHome
+
+[Service]
+StartLimitInterval=5
+StartLimitBurst=10
+DynamicUser=true
+StateDirectory=AdGuardHome
+WorkingDirectory=/var/lib/AdGuardHome
+AmbientCapabilities=CAP_NET_BIND_SERVICE CAP_NET_RAW
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE CAP_NET_RAW
+ExecStart=/usr/bin/AdGuardHome --no-check-update --work-dir /var/lib/AdGuardHome -s run
+ExecReload=/usr/bin/AdGuardHome -s reload
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target