Upstream commit: https://webrtc.googlesource.com/src/+/0f2354087d04a77bfe165eca64278b5fddb7d7ff Add a BUILD.gn file for resources. All build target resources will be moved there in a second step. Change-Id: Iadbb582e133feb375399c839870c7b298f3934c6 Bug: None Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/377282 Commit-Queue: Jeremy Leconte <jleconte@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/main@{#43913} Differential Revision: https://phabricator.services.mozilla.com/D243914