Add ngc option to inline templates for libraries.

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Current behavior

Angular library authors should inline templates (html/css) to ensure overall compatibility between different consumer types.

This can be done with a fairly simple script, but it has a few pitfalls:

• special care must be taken to maintain sourcemap lines (inline over TS sources before ngc).
• unit testing requires a separate module.id based setup to load templates into karma.
• no watch mode.

Expected behavior

Since inlining is heavily encouraged for library AOT compilation, it should be included as an option for ngc (e.g. angularCompilerOptions.inlineTemplates).

Minimal reproduction of the problem with instructions An example library can be found at https://github.com/filipesilva/angular-quickstart-lib.

What is the motivation / use case for changing the behavior? Less work for everyone building and shipping components, one less point of failure.

• Angular version: 4.x

• Language: [ TypeScript 2.x ]

/cc @IgorMinar @jasonaden

[Toxicable]

done via https://github.com/angular/angular/commit/b5be18f4059dc09ee9a3eb22ebd0b1485262e8fa

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