feat: import users from plex (#428)

* feat: import users from plex

fix #281

* fix(frontend): re-enable delete user confirmation button after finished

overseerr-api.yml

@@ -1673,6 +1673,24 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/User'
+  /user/import-from-plex:
+    post:
+      summary: Imports all users from Plex
+      description: |
+        Requests users from the Plex Server and creates a new user for each of them
+
+        Requires the `MANAGE_USERS` permission.
+      tags:
+        - users
+      responses:
+        '201':
+          description: A list of the newly created users
+          content:
+            application/json:
+              schema:
+                type: array
+                $ref: '#/components/schemas/User'
+
   /user/{userId}:
     get:
       summary: Retrieve a user by ID