Initial commit of template cache transformer for Angular.dart:

Issues/questions:
- Where to get the following input arguments:
	- entryPoint
	- outputLibrary
	- output
	- packageRoots
	- templateRoots
	- urlRewrites
	- skipClasses
	- cssRewriter
- Is
	'Uri.base.resolve(x)'
  a suitable replacement for
	'SourceFactory.resolveUri(srcPath, x);'
  ?

TODOs:
- Add a test file
- Remove current binary version of template cache generation