Add `needReinstall` status to `ApplicationInstallationStatus` enum

[KarlsonComplete]

Problem

When Bitrix24 never delivers ONAPPINSTALL after the initial Install request, the ApplicationInstallation stays in status new forever. Consumers need a dedicated status to mark these stale installations without deleting them, so that a future reinstall can detect and clean them up.

Proposed solution

Add a new enum case to ApplicationInstallationStatus:

File: src/Application/Contracts/ApplicationInstallations/Entity/ApplicationInstallationStatus.php

case needReinstall = 'needReinstall';

Semantics: the installation timed out waiting for ONAPPINSTALL and must be reinstalled. This status is set by a background cleanup worker (TTL-based), not by the install flow itself.

No other changes in this issue — the entity interface method, event, and repository method are tracked in separate issues.

Acceptance criteria

• case needReinstall = 'needReinstall' added to ApplicationInstallationStatus
• Enum comment describes the new status
• Related issue: mesilov/bitrix24-php-lib#92