[DAEMON-243] Create titaniumlib with tiapp.xml parsing, sdk and module detection logic

Create a new repo titaniumlib that contains the logic for parsing tiapp.xml files as well as the TiSDK and module detection code and scan paths from appcd-plugin-titanium-sdk. appcd-plugin-titanium will need to be updated to call titaniumlib for the sdk and module detection. The tiapp.xml parsing logic is to be lifted from node-titanium-sdk and freshened up with some ES6 syntax. Current tiapp.xml documentation: https://docs.appcelerator.com/platform/latest/#!/guide/tiapp.xml_and_timodule.xml_Reference. tiapp.xml proposal: https://techweb.axway.com/confluence/display/pe/Proposal%3A+Titanium+Project+Configuration