Add working configuration from initial install, plus agarica theme enablement

config/sync/group.role.group-member.yml

@@ -0,0 +1,20 @@
+uuid: 8efc8a96-fb7d-4395-b5bb-07a3354c3481
+langcode: en
+status: true
+dependencies:
+  config:
+    - group.type.group
+_core:
+  default_config_hash: wYJEHj7YnyBPmD0w3wEWyYKDEtAbOPOAYRqbyC7wHXA
+id: group-member
+label: Member
+weight: -100
+internal: true
+audience: member
+group_type: group
+permissions_ui: true
+permissions:
+  - 'update own group_membership content'
+  - 'leave group'
+  - 'view group'
+  - 'view group_membership content'