Add DDR experiment spec#300

Draft

frcroth wants to merge 4 commits intoooni:masterfrom

frcroth:add-ddr-spec

Commits on Jan 21, 2025

Add DDR experiment spec
frcroth
committed

Commits on Jan 31, 2025

Update DDR spec to use DNS data format with SVCB key
frcroth
committed

Commits on Apr 11, 2025

Fix spelling issue and add map types

frcroth
and
hellais
authored

Commits on Apr 17, 2025

Fix typo

frcroth
and
anadahz
authored