Multilanguage GUI about fmedia

[stsaz]

I've moved some strings to separate files:
https://github.com/stsaz/fmedia/blob/ccaaa006e879992b864c1b82a3e8a4d1d3779ba3/src/gui-winapi/gui_lang_en.txt
https://github.com/stsaz/fmedia/blob/ccaaa006e879992b864c1b82a3e8a4d1d3779ba3/src/gui-gtk/gui_lang_en.txt

All language codes should work automatically once added to fmedia.gui files.
This work is under another git branch gui-lang. Hopefully the feature will be released with v1.28.

[bovirus]

@stsaz

Please add italian language

gui_lang_it.txt

[stsaz]

Wow, cool!
By the way, if you wish to be on the Contributors list here on fmedia's GitHub page, you should consider opening a Pull Request. That way I can merge your patch, rather than committing by myself.

[bovirus]

@stzas

I consider to make a PR.
But I didn't find in repository the postion of file that instead I can get clicking on link.

Thanks.

[stsaz]

Nice! I've commented in your PR.
I understand that it's hard to make a perfect patch, so in general I can edit small things like file paths in patches from contributors, no problem.

[stsaz]

v1.28