Onboard iaas network area (#500)

* Onboard network-area resource (#469)

* onboard network-area resource

* fix update network ranges

* fix linter issues

* add organization id to test util

* add examples

* change project count to computed and adapt unit tests

* extend acceptance tests

* add docs

* fix linter issues

* add datasource to provider

* remove routes from the datasource schema

* remove obsolete api cals

* remove raw response from create network area

* change network ranges to list of objects

* update examples

* fix linter issues

* Update stackit/internal/services/iaas/networkarea/resource.go

Co-authored-by: João Palet <joao.palet@outlook.com>

* add network range id to schema

* map network_range_id

* fix unit tests

* adapt acceptance test

* fix acceptance tests

* Update stackit/internal/services/iaas/iaas_acc_test.go

Co-authored-by: João Palet <joao.palet@outlook.com>

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Co-authored-by: João Palet <joao.palet@outlook.com>

* Add network area to beta resources list (#481)

* add network area to beta resources list

* add accidentally removed line

* add accidentally removed line

* Fix multi range creation issue (#483)

* fix multi range creation issue

* fix network range update issue

* fix some unit tests

* fix order issue

* Update stackit/internal/services/iaas/networkarea/resource.go

Co-authored-by: João Palet <joao.palet@outlook.com>

* add unit test to cover the reconciled list

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Co-authored-by: João Palet <joao.palet@outlook.com>

* Onboard IaaS network area route (#491)

* onboard network area route

* generate docs

* add route to beta resources

* extend acceptance test

* fix import id handling

* Update next_hop description

Co-authored-by: João Palet <joao.palet@outlook.com>

* Update prefix description

Co-authored-by: João Palet <joao.palet@outlook.com>

* change descriptions in datasource

* add IP and CIDR validators

* use requiresReplace in resource

* improve error logs

* change the create response handling

* update docs

* change route and route id detection

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Co-authored-by: João Palet <joao.palet@outlook.com>

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Co-authored-by: João Palet <joao.palet@outlook.com>

stackit/internal/testutil/testutil.go

@@ -28,6 +28,8 @@ var (
 		"stackit": providerserver.NewProtocol6WithError(stackit.New("test-version")()),
 	}
 
+	// OrganizationId is the id of organization used for tests
+	OrganizationId = os.Getenv("TF_ACC_ORGANIZATION_ID")
 	// ProjectId is the id of project used for tests
 	ProjectId = os.Getenv("TF_ACC_PROJECT_ID")
 	// ServerId is the id of a server used for some tests