Add DataProduct resource support

[okvidhi]

This PR introduces support for the google_dataplex_data_product resource in the google-beta provider.

Key features include:

• Full CRUD Lifecycle: Verified support for creating, reading, updating, and deleting Data Products.
• In-place Updates: Modifications to metadata and access_groups correctly trigger PATCH requests (UpdateDataProduct), allowing for zero-downtime updates.
• LRO Polling: Implemented asynchronous polling to ensure Terraform waits for the long-running backend task to complete before reporting success.

`google_dataplex_data_product`

[github-actions]

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[modular-magician]

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

Diff report

Your PR generated some diffs in downstreams - here they are.

google provider: Diff ( 1 file changed, 242 insertions(+))
google-beta provider: Diff ( 6 files changed, 1560 insertions(+), 2 deletions(-))
terraform-google-conversion: Diff ( 1 file changed, 252 insertions(+))

[modular-magician]

Tests analytics

Total tests: 75
Passed tests: 73
Skipped tests: 0
Affected tests: 2

Click here to see the affected service packages

• dataplex

Action taken

Found 2 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

• TestAccDataplexDataProduct_dataplexDataProductBasicExample
• TestAccDataplexDataProduct_dataplexDataProductFullExample

Get to know how VCR tests work

[modular-magician]

🟢 Tests passed during RECORDING mode:
TestAccDataplexDataProduct_dataplexDataProductBasicExample [Debug log]
TestAccDataplexDataProduct_dataplexDataProductFullExample [Debug log]

🟢 No issues found for passed tests after REPLAYING rerun.

---

🟢 All tests passed!

View the build log or the debug log for each test