feat(jobs): add fusion_plating_jobs module skeleton (Phase 2 Task 2.1)

Empty module that will host the native job bridge during Phase 2
of the migration. Coexists with fusion_plating_bridge_mrp during
the migration period — both can be installed simultaneously
without conflict.

Depends on:
- fusion_plating (fp.job, fp.job.step, fp.work.centre from Phase 1)
- fusion_plating_configurator (fp.part.catalog, fp.coating.config)
- fusion_plating_portal (fusion.plating.portal.job)
- fusion_plating_logistics (fusion.plating.delivery)
- fusion_plating_quality (fusion.plating.customer.spec)
- fusion_plating_certificates (fp.certificate)

These deps are why these fields couldn't live in fusion_plating
core (would invert the dep graph). All cross-module fields on
fp.job and fp.job.step land here via _inherit in subsequent tasks.

auto_install=False — opt-in only.

Part of: native job model migration (spec 2026-04-25)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating_jobs/models/__init__.py

@@ -0,0 +1,6 @@
+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+#
+# Phase 2 of the native plating job model migration. Models are added
+# task-by-task in Tasks 2.2 onwards. This file imports them as they land.