Detect CDNs for HTTP tests

[jimaek]

If the user runs an HTTP tests we should detect the CDN being used and show the logo. It can happen on the frontend by checking the headers.
We can use this https://github.com/catchpoint/WebPageTest.agent/blob/master/internal/optimization_checks.py as basis for detection and our existing logo service.
In cases where there is no CDN we could output something else like the web server's logo.

[MartinKolarik]

Show where? Most of the time, the logo will be the same for all results, but might also differ, so in each result? Ask for a design update please, and tell Robert to also incorporate our updates from https://globalping.io/?measurement=2wBbPQkYTJ2QuQHr60001zliT (more timings, resolved address, TLS details). Also note that the logo service requires attribution near the images, include that in Figma too.