* Add language support metadata to the OFL families.
* Add language support metadata to all apache/ufl fonts.
* Add language support metadata / sample text to remaining OFL families.
* [gftools-packager] IBM Plex Sans Thai: Version 1.1 added
* IBM Plex Sans Thai Version 1.1 taken from the upstream repo https://github.com/googlefonts/plex at commit 67b4babc1f.
* [gftools-packager] ofl/ibmplexsansthai remove METADATA "source". google/fonts#2587