feat: contracts from odoo with pagination

odoo_somconnexio_python_client/exceptions.py

odoo_somconnexio_python_client/resources/contract.py

odoo_somconnexio_python_client/resources/odoo_paging.py

...est_contract/ContractTests.test_get_contract_by_code.yaml

...ract/ContractTests.test_get_contract_by_phone_number.yaml

..._contract/ContractTests.test_search_contract_by_code.yaml

...t/ContractTests.test_search_contract_by_customer_ref.yaml

...contract_by_customer_ref_with_pagination_bad_sort_by.yaml

...t/ContractTests.test_search_contract_by_phone_number.yaml

...t_contract/ContractTests.test_search_contract_by_vat.yaml

...Tests.test_search_paginated_contract_by_customer_ref.yaml

...ests.test_search_paginated_contracts_by_customer_ref.yaml

...ContractTests.test_search_paginated_contracts_by_vat.yaml

...ontract/ContractTests.test_search_resource_not_found.yaml

...FiberContractsToPackTests.test_search_by_partner_ref.yaml

...rContractsToPackTests.test_search_resource_not_found.yaml

tests/resources/test_contract.py

tests/resources/test_fiber_contracts.py