Add triggerhappy: HID input device handler (#1211)

More information:
<https://wiki.postmarketos.org/wiki/Troubleshooting:HID_buttons>

aports/main/triggerhappy/APKBUILD

@@ -0,0 +1,30 @@
+# Contributor: alive4ever
+pkgname=triggerhappy
+pkgver=0.5.0
+pkgrel=0
+pkgdesc="A lightweight hotkey daemon"
+url="https://github.com/wertarbyte/triggerhappy"
+arch="all"
+license="GPL-3.0-or-later"
+makedepends="linux-headers perl"
+subpackages="$pkgname-doc"
+options="!check"
+source="triggerhappy-$pkgver.tar.gz::https://github.com/wertarbyte/triggerhappy/archive/release/$pkgver.tar.gz
+	triggerhappy.openrc"
+builddir="$srcdir/$pkgname-release-$pkgver"
+
+build() {
+	cd "$builddir"
+	make
+}
+
+package() {
+	cd "$builddir"
+	make DESTDIR="$pkgdir/" install
+	install -Dm 644 "$builddir/triggerhappy.conf.examples" "$pkgdir/etc/triggerhappy/triggers.d/triggerhappy.conf.examples"
+	install -Dm 644 "$builddir/udev/triggerhappy-udev.rules" "$pkgdir/usr/lib/udev/rules.d/99-triggerhappy.rules"
+	install -Dm 755 "$srcdir/triggerhappy.openrc" "$pkgdir/etc/init.d/triggerhappy"
+}
+
+sha512sums="7a4c7a67a90a92e907fcc966902e9a1d5ebc702304ac4165d1a2733a0891dd08f4caf4e4677b41854fcd8021c03b2ffa118a34658dd5d4d97d538517457622dc  triggerhappy-0.5.0.tar.gz
+f6762c7fd8c493bbc6ae996fa687979ff2675773f8fa3e15dc49f5fbf074c45f2d93fce532936691b55bea8f11937696c7544c982b89ac378512e7614fbcf439  triggerhappy.openrc"

aports/main/triggerhappy/triggerhappy.openrc

@@ -0,0 +1,23 @@
+#!/sbin/openrc-run
+
+command="/usr/sbin/thd"
+command_args="--triggers /etc/triggerhappy/triggers.d/ --socket /run/thd.socket --deviceglob /dev/input/event* --pidfile=/run/triggerhappy.pid --daemon"
+pidfile="/run/triggerhappy.pid"
+
+name="Triggerhappy"
+description="Triggerhappy hotkey daemon"
+
+
+start() {
+	ebegin "Starting triggerhappy hotkey daemon"
+	start-stop-daemon --start --exec "$command"\
+		--pidfile "$pidfile" \
+		-- $command_args
+	eend $?
+}
+
+stop() {
+	ebegin "Stopping triggerhappy hotkey daemon"
+	start-stop-daemon --stop --pidfile "$pidfile"
+	eend $?
+}