Migrate new/updated metadata fields relevant for raw data

Some checks on formatting (particularly for how I entered the allowable values) might be necessary here, I also added some comments on the BEP document to flag potential issues or changes we could make going forward.

Author: m-miedema

src/schema/objects/metadata.yaml

@@ -732,6 +732,14 @@ ContainerURI:
     URI for software container image used to produce the dataset
   type: string
   format: uri
+ConcurrenceGroup:
+  name: ConcurrenceGroup
+  display_name: ConcurrenceGroup
+  description: |
+    An identifier shared by files recorded concurrently.
+    Each "ConcurrenceGroup" MUST be a unique string within one participant's tree,
+    shared only by the continuously recorded data which was measured simultaneously.
+  type: string
 ContinuousHeadLocalization:
   name: ContinuousHeadLocalization
   display_name: Continuous Head Localization
@@ -3108,8 +3116,8 @@ PhysioType:
   type: string
   enum:
     - $ref: objects.enums.PhysioTypeGeneric.value
-    - $ref: objects.enums.PhysioTypeEnhanced.value
     - $ref: objects.enums.PhysioTypeEyetrack.value
+    - $ref: objects.enums.PhysioTypeEnriched.value
 PixelSize:
   name: PixelSize
   display_name: Pixel Size