compute: add google_compute_cross_site_network list resource

[BBBmau]

Adds list-resource generation for google_compute_cross_site_network.

`google_compute_cross_site_network`

Local test output: TestAccComputeCrossSiteNetworkListQuery_generated

=== RUN   TestAccComputeCrossSiteNetworkListQuery_generated
=== PAUSE TestAccComputeCrossSiteNetworkListQuery_generated
=== CONT  TestAccComputeCrossSiteNetworkListQuery_generated
--- PASS: TestAccComputeCrossSiteNetworkListQuery_generated (35.37s)
PASS
ok      github.com/hashicorp/terraform-provider-google/google/services/compute 36.783s

[BBBmau]

@modular-magician reassign-reviewer

[github-actions]

Googlers: For automatic test runs see go/terraform-auto-test-runs.

@SirGitsalot, a repository maintainer, has been assigned to review your changes. If you have not received review feedback within 2 business days, please leave a comment on this PR asking them to take a look.

You can help make sure that review is quick by doing a self-review and by running impacted tests locally.

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit aa5122f:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
google provider	View Diff	3 files changed, 308 insertions(+)
google-beta provider	View Diff	3 files changed, 308 insertions(+)

Test report

Analytics

Total Tests	Passed	Skipped	Affected
1453	1359	93	1

Affected Service Packages

• compute

Learn how VCR tests work

---

Step 1: Replaying Mode

Action taken

Found 1 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit.

Click here to see the affected tests

• TestAccComputeCrossSiteNetworkListQuery_generated

View the replaying VCR build log

---

Step 2: Recording Mode

Recording Mode	Replaying Rerun	Test Name
✅ Log	✅	TestAccComputeCrossSiteNetworkListQuery_generated

🟢 All tests passed!

View the recording VCR build log or the debug logs folder for detailed results.

@BBBmau, @SirGitsalot VCR tests complete for aa5122f!