[Feature] UTF-8 Input/Output Conversion

[gluax]

🚀 Feature

The inputs and outputs should be converted to UTF-32.

Motivation

Users should be able to define char and string types in the input.
They should also be allowed in the output files.
This helps the implementation goal of #929.

Implementation

Compiler.

• Should be converted from UTF-8 to UTF-32.

Tests

• Should have input tests for each type.
  • char
  • string

[damirka]

Closed by #957.