add game Unvanquished, Freedoom Phase2, Warzone 2100 and Blender

Unvanquished

• game: https://unvanquished.net/
• quality: lowest and ultra
• distribution: Flatpak

Freedoom Phase2

• game: https://freedoom.github.io/
• quality: high (settings maxed out)
• distribution: Flatpak

Warzone 2100

• game: https://wz2100.net/
• quality: default (textures set to lowest quality)
• distribution: Debian

Blender

• application: https://blender.org/
• quality: default
• distribution: Debian

Signed-off-by: David Heidelberg david.heidelberg@collabora.com