libdisplay-info might not be good enough for HDR info

[UjinT34]

libdisplay-info fails to parse some extension blocks completely or partially. Those blocks contain info regarding HDR support.
https://git.linuxtv.org/edid-decode.git/ this tool works fine. So even if the edid itself is slightly broken it contains necessary info which can be extracted.

What should we do with #112?

• Switch to some other lib?
• Wait for libdisplay-info updates?
• Fork it and apply some patches?
• Add some env vars to force necessary values?

[vaxerski]

We can also ditch DI and just write the code ourselves, after all.

Up to you. I wouldn't wait for updates.