Build velia daemon

Introduce package for velia, configure build and systemd services.
Removes czechlight LEDs boot service.

Change-Id: I84d724918a3a6c7654eb113abce4d7068d7770a6
Co-authored-by: Jan Kundrát <kundrat@cesnet.cz>
diff --git a/package/velia/velia.hash b/package/velia/velia.hash
new file mode 100644
index 0000000..075e53a
--- /dev/null
+++ b/package/velia/velia.hash
@@ -0,0 +1 @@
+none xxx