Adding groups logic and restrictions (#454)

* Adding groups logic and restrictions

* Cleaning up some redundant code

* hastily made translations

* Linter issues

* More linting

* PR comments

* Covering other APIs with age filters per comment

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Co-authored-by: Robert Clabough <robert@clabough.tech>

server/i18n/locales/en_us.json

@@ -817,6 +817,26 @@
       "description": "Manage the users on your Drop instance, and configure your authentication methods.",
       "displayNameHeader": "Display Name",
       "emailHeader": "Email",
+      "groups": {
+        "addBannedRating": "Add banned rating",
+        "addMember": "Select a user...",
+        "bannedRatings": "Banned Ratings",
+        "createGroup": "Create Group",
+        "deleteConfirm": "Are you sure you want to delete this group? This action cannot be undone.",
+        "deleteGroup": "Delete",
+        "description": "Manage user groups and age rating restrictions.",
+        "descriptionField": "Description",
+        "details": "Details",
+        "members": "Members",
+        "name": "Name",
+        "noBannedRatings": "No banned ratings configured.",
+        "noMembers": "No members in this group.",
+        "oidcManagedNote": "Group membership is managed by your OIDC provider. Members are automatically synced when users log in. To change group membership, update your identity provider's group assignments.",
+        "removeBannedRating": "Remove",
+        "removeMember": "Remove",
+        "title": "User Groups",
+        "unratedNote": "Games without age ratings will also be hidden from users in this group."
+      },
       "normalUserLabel": "Normal user",
       "simple": {
         "adminInvitation": "Admin invitation",