Implement compile process for development

[davidfirst]

which is different than compile for release.

This compilation takes place on the workspace and the dists are saved inside the component dir.
The provider should implement compileFile function as follows:

compileFile: (fileContent: string, options: { componentDir: string, filePath: string }) => Array<{ outputText: string, outputPath: string }> | null;

In case the compiler receive an unsupported file, it should return null.

Also, implemented the typescript core-ext compileFile method.

[AppVeyorBot]

❌ Build bit 1.0.10425 failed (commit 04b36e5e3e by @davidfirst)