Size of app (windows) optimization about smtp4dev

[garygreen]

Possibly helpful: https://www.hanselman.com/blog/experimental-reducing-the-size-of-net-core-applications-with-monos-linker

[rnwood]

Good feedback about the entry point. A change was recently made for the platform specific builds to pack into only a few files

Also good feedback about the JS symbols. These should now be excluded from release builds.

The rest is mostly because for the platform that this is now built on, you have to bundle all the dependencies with the app. You've also downloaded one of the platform specific builds that includes the runtime. Whereas for the original smtp4dev, the runtime and framework libraries were shipped with Windows.

Unfortunately, the linking and tree shaking is not yet available for the type of web app that we are using, but if that comes in future, we will enable it.