GitLab

* doc: remove broken link

* add docker build environment

* Add Occitan language

* Update languages.ini

Added Serbian translation, both latin and cyrilic.

This should allow Github to autodetect the license type and show it in the header, and also index it for project search by license.

2. auto installation plugin update
    1) Expand the configuration, now you can specify more than one auto installation scripts for one ISO file
    2) Add a prompt for the iso with auto installation config, you can choose whether to use the auto installation script and which one to use for this time
3. persistence plugin update
    1) Expand the configuration, now you can specify more than one persistence backend image files for one ISO file
    2) Add a prompt for the iso with persistence config, you can choose whether to use the persistence image and which one to use for this time
4. Move the position of the red Memdisk tip to a more prominent position
5. Add a return parent directory item when in TreeView mode
6. Add a VTOY_DEFAULT_SEARCH_ROOT option in global control plugin to specify the root path of the iso files.
7. Change the style of F2 power menu
8. Fix a bug about Ventoy2Disk.exe can't start when there is a DataRAM Ramdisk in the system.
9. Files with size less than 32KB will be filted by default
10. Fix a bug about wrong file size in TreeView mode with NTFS/XFS
11. Files with space or Non Ascii charactors in name will be shown but with unsupported message when you boot it.
12. Optimization for Ventoy2Disk.sh
13. Optimization for arch linux boot
14. New iso support