main.star: add a logo via luci.milo()

https://chromium.googlesource.com/infra/luci/luci-go/+/refs/heads/main/lucicfg/doc/README.md#luci.milo

Bug: 1028422
Change-Id: I4d9c35efed302fb081f2135b84fd92bb43c3eb29
Reviewed-on: https://chromium-review.googlesource.com/c/codecs/infra/+/2941680
Reviewed-by: Jose Alanis Baez <alanisbaez@google.com>
Reviewed-by: James Zern <jzern@google.com>

infra/config/generated/luci-milo.cfg

diff --git a/infra/config/generated/luci-milo.cfg b/infra/config/generated/luci-milo.cfg
index 99209f0..475e310 100644
--- a/infra/config/generated/luci-milo.cfg
+++ b/infra/config/generated/luci-milo.cfg
@@ -31,3 +31,4 @@
   }
   builder_view_only: true
 }
+logo_url: "https://storage.googleapis.com/downloads.webmproject.org/media/images/oc-logo-luci.svg"

infra/config/main.star

diff --git a/infra/config/main.star b/infra/config/main.star
index a300473..dba3616 100755
--- a/infra/config/main.star
+++ b/infra/config/main.star
@@ -93,6 +93,10 @@
     ],
 )
 
+luci.milo(
+    logo = "https://storage.googleapis.com/downloads.webmproject.org/media/images/oc-logo-luci.svg",
+)
+
 # Required Logdog configuration.
 luci.logdog(gs_bucket = "open-codecs-luci-logdog")
 luci.cq(status_host = "chromium-cq-status.appspot.com")