Add LDoc configuration and slightly extend doxify.sh.

Add documentation in various places.

config.ld

@@ -0,0 +1,16 @@
+file = {
+	'src',
+	exclude = {'src/test'}
+}
+
+dir = 'docs'
+format = 'markdown'
+
+readme = 'README.md'
+title = "WiFibox firmware documentation"
+project = "Wifibox firmware"
+description = "This project provides the REST API which is part of the Doodle3D wifibox."
+
+alias('p', 'param')
+
+all = true