add initial pkgbuild jizz for archlinux so that we can help make sure it is not broken ALL the time

contrib/archlinux/PKGBUILD

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+# Maintainer: jeff <jeff@oxen.io>
+pkgname=lokinet-git
+pkgver=420.69.poggerinos.yoloswag.fresh.af.from.git
+pkgrel=3
+pkgdesc="Anonymous, decentralized and IP based overlay network for the internet."
+arch=('x86_64' 'aarch64')
+url="https://lokinet.org"
+license=('GPL3')
+depends=('libuv' 'libsodium' 'curl' 'unbound' 'sqlite' 'jemalloc' 'libsystemd')
+makedepends=('git' 'cmake' 'pkgconf')
+conflicts=('lokinet' 'lokinet-bin')
+source=("lokinet-git::git+https://github.com/oxen-io/lokinet")
+b2sums=('SKIP')
+
+prepare() {
+          cd lokinet-git
+          git submodule update --init --recursive
+}
+
+build() {
+	cd "lokinet-git"
+
+	rm -rf build && mkdir build && cd build
+	cmake \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DCMAKE_INSTALL_PREFIX=/usr \
+		-DCMAKE_C_FLAGS="$CFLAGS" \
+		-DCMAKE_CXX_FLAGS="$CXXFLAGS" \
+		-DWITH_TESTS=OFF \
+		-DWITH_SYSTEMD=ON \
+        -DWITH_SETCAP=OFF \
+		..
+	make
+}
+
+package() {
+	cd "lokinet-git"
+	install -D -m 644 LICENSE.txt "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+	cd build
+	make DESTDIR="$pkgdir" install
+
+	install -D -m 644 "$srcdir/contrib/archlinux/lokinet.service"                "$pkgdir/usr/lib/systemd/system/lokinet.service"
+	install -D -m 644 "$srcdir/contrib/archlinux/lokinet-vpn.service@"           "$pkgdir/usr/lib/systemd/system/lokinet-vpn.service@"
+	install -D -m 644 "$srcdir/contrib/archlinux/lokinet-bootstrap.service"      "$pkgdir/usr/lib/systemd/system/lokinet-bootstrap.service"
+	install -D -m 644 "$srcdir/contrib/archlinux/lokinet-default-config.service" "$pkgdir/usr/lib/systemd/system/lokinet-default-config.service"
+	install -D -m 644 "$srcdir/contrib/archlinux/lokinet-resume.service"         "$pkgdir/usr/lib/systemd/system/lokinet-resume.service"
+	install -D -m 644 "$srcdir/contrib/archlinux/lokinet.sysusers"               "$pkgdir/usr/lib/sysusers.d/lokinet.conf"
+	install -D -m 644 "$srcdir/contrib/archlinux/lokinet.tmpfiles"               "$pkgdir/usr/lib/tmpfiles.d/lokinet.conf"
+	install -D -m 644 "$srcdir/contrib/archlinux/lokinet.pkla"                   "$pkgdir/var/lib/polkit-1/localauthority/10-vendor.d/lokinet.pkla"
+	install -D -m 750 -d "$pkgdir/usr/share/polkit-1/rules.d"
+	install -D -m 644 "$srcdir/contrib/archlinux/lokinet.rules"                  "$pkgdir/usr/share/polkit-1/rules.d/lokinet.rules"
+}

contrib/archlinux/lokinet-bootstrap.service

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+[Unit]
+Description=Lokinet bootstrap
+ConditionFileNotEmpty=!/var/lib/lokinet/bootstrap.signed
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=oneshot
+User=_lokinet
+WorkingDirectory=/var/lib/lokinet
+ExecStart=/usr/bin/lokinet-bootstrap lokinet bootstrap.signed

contrib/archlinux/lokinet-default-config.service

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+[Unit]
+Description=Lokinet default config generator
+ConditionPathExists=!/var/lib/lokinet/lokinet.ini
+Wants=local-fs.target
+After=local-fs.target
+
+[Service]
+Type=oneshot
+User=_lokinet
+ExecStart=/usr/bin/lokinet -g /var/lib/lokinet/lokinet.ini

contrib/archlinux/lokinet-resume.service

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+[Unit]
+Description=Restart lokinet on resume from sleep
+After=sleep.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/systemctl restart lokinet
+
+[Install]
+WantedBy=sleep.target

contrib/archlinux/lokinet-vpn.service@

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+[Unit]
+Description=Lokinet VPN tunnel: shove all traffic over lokinet
+Requires=lokinet.service
+After=lokinet.service
+
+[Service]
+User=_lokinet
+Type=oneshot
+ExecStart=/usr/bin/lokinet-vpn --up --exit %i
+ExecStop=/usr/bin/lokinet-vpn --down
+RemainAfterExit=true
+
+[Install]
+WantedBy=multi-user.target

contrib/archlinux/lokinet.service

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+[Unit]
+Description=Lokinet: Anonymous Network layer thingydoo
+Wants=network-online.target
+After=network-online.target
+Wants=lokinet-bootstrap.service
+After=lokinet-bootstrap.service
+Wants=lokinet-default-config.service
+After=lokinet-default-config.service
+
+[Service]
+Type=notify
+WatchdogSec=30s
+User=lokinet
+SyslogIdentifier=lokinet
+WorkingDirectory=/var/lib/lokinet
+CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE
+AmbientCapabilities=CAP_NET_ADMIN CAP_NET_BIND_SERVICE
+ExecStart=/usr/bin/lokinet /var/lib/lokinet/lokinet.ini
+Restart=always
+RestartSec=5s
+
+# Hardening
+PrivateTmp=yes
+ProtectHome=yes
+ProtectSystem=strict
+ProtectHostname=yes
+ProtectKernelLogs=yes
+ReadWritePaths=/var/lib/lokinet
+
+[Install]
+WantedBy=multi-user.target

contrib/archlinux/lokinet.sysusers

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+u _lokinet - "Lokinet daemon user" /var/lib/lokinet

contrib/archlinux/lokinet.tmpfiles

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+d /var/lib/lokinet 0700 lokinet lokinet - -