Add arrays & tables to the scripts

[Ratstail91]

Arrays are an essential data structure, and are used internally in several places as well.

While they are partially working at this stage, some elements are missing:

• Assigning to specific elements
• Accessing the length of an array
• Pushing and popping an array
• slicing an array
• concating arrrays
• array type specifier

Dictionaries, the other major data structure, are working internally, but they need to be exposed to the scripts.

• Table declaration
• Table assign
• Table access
• add/remove
• length
• concat?
• type specifier

[Ratstail91]

BUG: Forgot to allow empty arrays.

TODO: Allow trailing commas.

Fixed in 5f75b5f

[Ratstail91]

b092b8c

Tables seem to be working well, though tests are still needed.

[Ratstail91]

table add and remove seems to be automatic, while printing it with string elements doesn't show any quote marks.

[Ratstail91]

I wonder if implicit insertions for tables is good or bad?

C++ std::map definitely has that issue...

Edit: Since variables default to 'null', having the tables default to null might be a good idea too.

[Ratstail91]

I'm gonna leave this part for now until other prerequisites are done.