Support for .data and .text sections

[joamag]

Description

Must create a separated .data section that stores a series of constant values that can be later loaded into the stack using the load instruction and a label.

The .text section is the typical one with the assembly code (default one).

Example

https://github.com/joamag/mingus/blob/master/examples/hello.mia

[joamag]

There's already very good support for the data and text sections through f74f56e

[joamag]

What's missing to have a proper data section

1. Register the size in bytes of the data section in the header of the file
2. Create an hash of the data elements to know where to find them in the file
3. Generate the data section code
4. Make the code in the runtime VM to read the section and manage memory