feat: add default cds to hiv-1 dataset

Author: ivan-aksamentov

data/community/neherlab/hiv-1/hxb2/pathogen.json

@@ -26,6 +26,7 @@
     "deprecated": false,
     "enabled": true,
     "experimental": true,
+    "defaultCds": "RT-p66",
     "files": {
         "pathogenJson": "pathogen.json",
         "changelog": "CHANGELOG.md",