[Feat.] DMS: Add smart connect task action

[muneeb-jan]

Summary of the Pull Request

Add new resource opentelekomcloud_dms_smart_connect_task_action_v2.
With the new resource it is possible...

1. To pause a smart connect task
2. To resume a smart connect task
3. To start or restart a smart connect task

PR Checklist

• Refers to: [DMS] Request for New Features: Enhancements for Distributed Message Service (DMS) Management #2729
• Tests added/passed.
• Documentation updated.
• Schema updated.
• Release notes added.

Acceptance Steps Performed

=== RUN   TestAccDmsKafkav2SmartConnectTaskActionV2_basic
=== PAUSE TestAccDmsKafkav2SmartConnectTaskActionV2_basic
=== CONT  TestAccDmsKafkav2SmartConnectTaskActionV2_basic
--- PASS: TestAccDmsKafkav2SmartConnectTaskActionV2_basic (1242.92s)
PASS

Note: Manually verified test results.

[otc-zuul]

Build succeeded.
https://zuul.otc-service.com/t/eco/buildset/1cb9924120a94f718cd520e628b5c8a6

✔️ build-otc-releasenotes SUCCESS in 4m 05s
✔️ noop SUCCESS in 0s
✔️ otc-golangci-lint SUCCESS in 3m 24s
✔️ golang-make-test SUCCESS in 4m 17s
✔️ golang-make-vet SUCCESS in 2m 52s
✔️ tflint SUCCESS in 1m 53s
✔️ goreleaser-build SUCCESS in 10m 21s