Add project-remote-state attribute to Workspace

[hs26gill]

Description

This PR adds BETA project-remote-state attribute to Workspace. This new attribute allows the workspace to share its remote state with other workspaces within the project.

Testing plan

Added unit tests: TestWorkspacesProjectRemoteState

• API documentation
• Jira

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Output from tests

Including output from tests may require access to a TFE instance. Ignore this section if you have no environment to test against.

$ TFE_ADDRESS="https://example" TFE_TOKEN="example" go test ./... -v -run TestWorkspacesProjectRemoteState

[datadog-terraform-cloud-hashicorp]

⚠️ Tests

⚠️ Warnings

🧪 2 Tests failed

TestPolicySetsRead from policy_set_integration_test.go (Datadog)

failed test

TestPolicySetsRead/with_policy_set_version from policy_set_integration_test.go (Datadog)

	Error Trace:	/home/runner/work/go-tfe/go-tfe/policy_set_integration_test.go:649
	            				/home/runner/go/pkg/mod/github.com/!data!dog/dd-trace-go/[email protected]/internal/civisibility/integrations/gotesting/instrumentation_orchestrion.go:242
	Error:      	Expected value not to be nil.
	Test:       	TestPolicySetsRead/with_policy_set_version

ℹ️ Info

❄️ No new flaky tests detected

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[Maed223]

Looking good, just need a slight adjustment in the changelog

[jbonhag]

Thank you!! The attribute changes look good, but I think we should drop the "beta" labels since this is available in TFE, and we're not calling it beta there.

[ctrombley]

@hs26gill would you mind rebasing this PR branch on main?