feat: create freeBSD service

.github/workflows/release.yml

@@ -179,7 +179,7 @@ jobs:
         if: matrix.build == 'freebsd'
         uses: bpicode/github-action-fpm@master
         with:
-          fpm_args: "${{ matrix.asset_name }}-${{ github.ref_name }}=/usr/sbin/defguard-gateway defguard-gateway.service=/usr/lib/systemd/system/defguard-gateway.service example-config.toml=/etc/defguard/gateway.toml"
+          fpm_args: "${{ matrix.asset_name }}-${{ github.ref_name }}=/usr/sbin/defguard-gateway defguard-gateway.service.freebsd=/usr/local/etc/rc.d/defguard example-config.toml=/etc/defguard/gateway.toml defguard-rc.conf=/etc/rc.conf.d/defguard"
           fpm_opts: "--debug -t freebsd --version=${{ env.VERSION }} -p defguard-gateway_${{ env.VERSION }}_${{ matrix.target }}.txz"
 
       - name: Upload freebsd

defguard-gateway.service.freebsd

@@ -0,0 +1,21 @@
+!/bin/sh
+
+# PROVIDE: defguard
+# REQUIRE: NETWORKING wireguard
+# KEYWORD: shutdown
+
+. /etc/rc.subr
+
+name="defguard"
+rcvar=defguard_enable
+command="/usr/local/sbin/defguard-gateway"
+config="/etc/defguard/gateway.toml"
+start_cmd="${name}_start"
+
+defguard_start()
+{
+  ${command} --config ${config} &
+}
+
+load_rc_config $name
+run_rc_command "$1"

defguard-rc.conf

@@ -0,0 +1 @@
+defguard_enable="YES"