Changes

Adding some primitives for native gui support, read more here.
Goffi feature finalized and adding support for Goffi in phar mode, aka you can run composer prod:build and it will work.
This is achieved by dumping the shared objects and header files in the current directory.
Adding a new function asPharFileName() which takes care of converting a given file name into a file name relative to the archive.
```
<?php
use function CatPaw\Core\asPharFileName;

function main() {
    echo asPharFileName("./src/main.php").PHP_EOL;
}
```
When running with
```
composer prod:start
```
the program will print /home/raz/Desktop/starter/src/main.php.

Whereas when running with
```
composer prod:build &&\
php app.phar
```
the program will print phar:///home/raz/Desktop/starter/app.phar/src/main.php.

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