[remove import *][2/n] remove rest of import * in implementations (#690)

# What does this PR do?

- see https://github.com/meta-llama/llama-stack/pull/689
<img width="591" alt="image"
src="https://github.com/user-attachments/assets/76946a67-7373-43b5-8a03-0ad201aa543b"
/>

- leaving `tools/builtin.py` to avoid conflicts


## Test Plan

- see https://github.com/meta-llama/llama-stack/pull/689

## Sources

Please link relevant resources if necessary.


## Before submitting

- [ ] This PR fixes a typo or improves the docs (you can dismiss the
other checks if that's the case).
- [ ] Ran pre-commit to handle lint / formatting issues.
- [ ] Read the [contributor
guideline](https://github.com/meta-llama/llama-stack/blob/main/CONTRIBUTING.md),
      Pull Request section?
- [ ] Updated relevant documentation.
- [ ] Wrote necessary unit or integration tests.

llama_stack/cli/stack/build.py

@@ -3,21 +3,28 @@
 #
 # This source code is licensed under the terms described in the LICENSE file in
 # the root directory of this source tree.
-
 import argparse
-
-from llama_stack.cli.subcommand import Subcommand
-from llama_stack.distribution.datatypes import *  # noqa: F403
 import os
 import shutil
 from functools import lru_cache
 from pathlib import Path
+from typing import List, Optional
 
 import pkg_resources
 
+from llama_stack.cli.subcommand import Subcommand
+
+from llama_stack.distribution.datatypes import (
+    BuildConfig,
+    DistributionSpec,
+    Provider,
+    StackRunConfig,
+)
+
 from llama_stack.distribution.distribution import get_provider_registry
 from llama_stack.distribution.resolver import InvalidProviderError
 from llama_stack.distribution.utils.dynamic import instantiate_class_type
+from llama_stack.providers.datatypes import Api
 
 TEMPLATES_PATH = Path(__file__).parent.parent.parent / "templates"