Add new Github pipeline for integration testing #6

Job	Run time
prerequisites	12s
setup-tf-providers (terraform, 1.11.4)	26s
setup-tf-providers (tofu, 1.9.0)	42s
tests (tofu, 1.9.0)	1m 3s
tests (terraform, 1.11.4)	1m 17s
push-changes	3s
	3m 43s

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