Initial commit: OCA payment modules from bank-payment

- account_payment_mode: Payment methods configuration
- account_payment_partner: Link payment modes to partners
- account_payment_order: Create and manage payment orders
- account_payment_order_grouped_output: Consolidated accounting entries

Source: OCA/bank-payment branch 16.0
License: AGPL-3.0

🤖 assisted by claude

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+*.manifest
+*.spec
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Odoo
+*.pot
+*.pyc
+*.pyo
+*.mo
+*~
+
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+.vscode/
+.idea/
+*.swp
+*.swo
+*.swn
+.project
+.pydevproject
+.settings/
+
+# OS
+.DS_Store
+Thumbs.db