[Feature] Added `databricks_registered_model_versions` data source

[alexott]

Changes

This source allows to retrieve information about all versions for a given model.

Also fixed an incorrect link in the docs for databricks_registered_model

Tests

• [x] make test run locally
• [x] relevant change in docs/ folder
• [x] covered with integration tests in internal/acceptance
• [x] relevant acceptance tests are passing
• [x] using Go SDK

[github-actions[bot]]

If integration tests don't run automatically, an authorized user can run them manually by following the instructions below:

Trigger: go/deco-tests-run/terraform

Inputs:

• PR number: 4100
• Commit SHA: 441b879fabe20a0da3f1255681e5ce105e4a7088

Checks will be approved automatically on success.

[eng-dev-ecosystem-bot]

Test Details: go/deco-tests/11859400525