Start work on lua based plugin system

plugins/api.go

@@ -0,0 +1,12 @@
+package plugins
+
+import lua "github.com/yuin/gopher-lua"
+
+// TODO: Decide on the API made available to plugins
+// Everything has to be a function, assume no internal state
+// since the used lua state may vary between calls
+type linstromApi struct{}
+
+func insertLinstromApiIntoState(l *lua.LState) error {
+	panic("not implemented")
+}