feat(server): remove inactive sessions (#9121)

* feat(server): remove inactive sessions

* add rudimentary unit test

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Co-authored-by: Daniel Dietzler <mail@ddietzler.dev>

server/test/repositories/session.repository.mock.ts

@@ -3,6 +3,7 @@ import { Mocked, vitest } from 'vitest';
 
 export const newSessionRepositoryMock = (): Mocked<ISessionRepository> => {
   return {
+    search: vitest.fn(),
     create: vitest.fn() as any,
     update: vitest.fn() as any,
     delete: vitest.fn(),