Add Texture 3.5.0.2 release for OJS 3.5

[withanage]

Adds the Texture 3.5.0.2 release entry (OJS 3.5 compatible) to the plugin gallery.

• Release: https://github.com/pkp/texture/releases/tag/v3_5_0-2
• Package: texture-v3_5_0-2.tar.gz
• md5: 1b8c80d995bab2da498f3141bb423b86 (verified against the uploaded asset)
• Compatibility: OJS ~3.5.0.0

plugins.xml validates against plugins.xsd.

[withanage]

Superseding with a fresh PR for the Texture 3.5.0.2 release (now on the stable-3_5_0 branch of pkp/texture).