role map field with validation

web/public/locales/en/config/validation.json

@@ -17,5 +17,6 @@
   "additionalProperties": "Unknown property is not allowed",
   "oneOf": "Must match exactly one of the allowed schemas",
   "anyOf": "Must match at least one of the allowed schemas",
+  "proxy.header_map.roleHeaderRequired": "Role header is required when role mappings are configured.",
   "ffmpeg.inputs.rolesUnique": "Each role can only be assigned to one input stream."
 }

web/public/locales/en/views/settings.json

@@ -1218,6 +1218,13 @@
     "timezone": {
       "defaultOption": "Use browser timezone"
     },
+    "roleMap": {
+      "empty": "No role mappings",
+      "roleLabel": "Role",
+      "groupsLabel": "Groups",
+      "addMapping": "Add role mapping",
+      "remove": "Remove"
+    },
     "ffmpegArgs": {
       "preset": "Preset",
       "manual": "Manual arguments",