Rename module names to start with `com.microsoft.`

As requestd by @brunoborges https://twitter.com/brunoborges/status/1423503746995298304 😉

Rename module names to start with com.microsoft., in order to follow the reverse-DNS style pattern. Find more information and detailed reasonings here: https://blog.joda.org/2017/04/java-se-9-jpms-module-naming.html

Nice side-effect: their Maven coordinates will be automatically mapped by https://github.com/sormuras/modules

Deliverables:

• Rename main module names and their usages (i.e. requires directives)
  • From gctoolkit.api to com.microsoft.gctoolkit.api
  • From gctoolkit.parser to com.microsoft.gctoolkit.parser
  • From gctoolkit.vertx to com.microsoft.gctoolkit.vertx
• Update test modules to read new main module names
• Rename test module names
• Rename sample module from gctoolkit.sample to com.microsoft.gctoolkit.sample
• Update module snippet here https://devblogs.microsoft.com/java/introducing-microsoft-gctoolkit

[dsgrieve]

I think the sample should be renamed is well. It is important to be consistent in order to avoid confusion.

[karianna]

@brunoborges - would you be OK to update the blog or is that a @kirk-microsoft task?