Added Minesweeper generator

[felix91gr]

• Added generator itself
• Updated generated Test file
• Fixed Example and Minesweeper classes to recieve and return the right type on method Annotate.
  Was: string -> string. Now it is: string[] -> string[]

@ErikSchierboom please tell me I didn't screw up by changing Annotate from a string -> string function to a string[] -> string[] one? I don't know how else to interpret the Canonical Data files.

If that's allright, then this commit is pretty much cooked afaik.

[felix91gr]

I branched this one off of master, so it's clean to be merged before #471 and #412

[ErikSchierboom]

I think it's perfectly fine to change the input and output to use a string[]. There are two things I thing can be improved:

1. Use variables for the input and expected output. They are currently displayed inline, which leads to long sentences that are hard to read.
2. Format the arrays such that they are neatly aligned on different lines. For an example, see this PR.

Thanks for doing this!

[felix91gr]

I'm done with number 1.

Format the arrays such that they are neatly aligned on different lines.

Now I'm on to this.

[felix91gr]

@ErikSchierboom this one's ready as well ;)

[ErikSchierboom]

One tiny comment, and then we're good to go!

[ErikSchierboom]

I think no rows should mean an empty array, not an array with an empty string. Could you replace that (also for the expected value)?

[felix91gr]

Sure!

[felix91gr]

Okay, now I've fixed and tested it. The arrays it creates now are actually better, because they are strictly new string[].

Creating just new [] is not a good idea imo, if we can avoid it. In this case, we know that the input is exactly a string array, so I changed that as well.

Thanks for the feedback.
Tell me what you think of this one :)

[ErikSchierboom]

Merged. Thanks! 🎉