Use logging.warning for high_level_api experimental warning

Summary

Replace a call to warnings.warn with logging-warning, as warnings.warn cannot be filtered during imports.
Addresses caosdb-advanced-user-tools#146 (closed)

Check List for the Author

• All automated tests pass
• Reference related issues
• Up-to-date CHANGELOG.md (or not necessary)
• Up-to-date JSON schema (or not necessary)
• Appropriate user and developer documentation (or not necessary)
• Annotations in code (Gitlab comments)

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• Appropriate user and developer documentation (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there specifications? Are they satisfied?

src/linkahead/high_level_api.py

@@ -26,11 +26,12 @@
 # type: ignore
 """
 A high level API for accessing LinkAhead entities from within python.
+This module is experimental, and may be changed or removed in the future.
 
 This is refactored from apiutils.
 """
 
-import warnings
+import logging
 from dataclasses import dataclass, fields
 from datetime import datetime
 from typing import Any, Dict, List, Optional, Union
@@ -44,7 +45,10 @@ from .common.datatype import (BOOLEAN, DATETIME, DOUBLE, FILE, INTEGER,
                               REFERENCE, TEXT, get_list_datatype,
                               is_list_datatype, is_reference)
 
-warnings.warn("""EXPERIMENTAL! The high_level_api module is experimental and may be changed or
+logger = logging.getLogger(__name__)
+
+
+logger.warning("""EXPERIMENTAL! The high_level_api module is experimental and may be changed or
 removed in the future. Its purpose is to give an impression on how the Python client user interface
 might be changed.""")