Unicode 16 bits runtime support

[marcos10soares]

At the time I didn't find a way to create text containing 16bits characters in runtime, so I modified the "libaria_string.c" file with the following function in order to support it.

Here it is just in case you might want to add it to the library:

laString laString_CreateFromCharBuffer16(const uint16_t* chr, uint16_t size, GFXU_FontAsset* fnt)
{
    laString str = { 0, 0, 0, 0, LA_STRING_NULLIDX };
    uint32_t i;
    
    if(laContext_GetActive() == NULL || chr == NULL)
    {
        laString_Initialize(&str);
        return str;
    }

    if(size != 0)
    {
        laString_Allocate(&str, size);

        if(str.capacity == 0)
            return str;

        for(i = 0; i < size; i++)
        {
            str.data[i] = (GFXU_CHAR)(chr[i]);
        }

        str.data[i] = '\0';
    }
 
    str.font = fnt;
    str.table_index = LA_STRING_NULLIDX;
    
    return str;
}

[microchip-gfx]

This is a good submission. Thank you for posting.

As an FYI the newer Legato graphics library in Harmony uses 16 bit character strings by default.