feature(appDecouple): Platforms Implementation

[joshwiens]

At a high level, this will take the concept of "project" and extend that into "frameworks" implementing web and enabling mobile & desktop for implementation in NathanWalker/angular2-seed-advanced

Framework Configuration

• implement dedicated package.json in src/web
• implement full web framework config
• Enable basic desktop framework config
• Enable basic mobile framework config

Framework Typings

• Split current manual typings to Seed / Web framework typings

Framework capable builds

• Split current build tasks to Seed / Web framework build tasks
• Enable desktop build
• Enable mobile build

Any task beginning with Enable is outside the scope of the parent seed, it will not be implemented but designed in a way that makes other framework implementations possible without having to modify the seed tools

Any desktop or mobile specific code you see in this PR will be removed prior merge and their commits rebased out. It exists while work is in progress to simplify discussion and review for frameworks other than web.