Python: allow settings to be created directly (#11468)

### Motivation and Context

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I've always hated having to add the .create to a settings object, this
removes that, you can just use the regular init, added benefit is that
it has the proper fields in the docstrings for each implemented settings
object!

### Description

<!-- Describe your changes, the overall approach, the underlying design.
These notes will help understanding how your code works. Thanks! -->
Adds a __new__ method to the base settings class, which takes the prefix
and if supplied the env_file and encoding, then calls model_rebuild and
then the init.

### Contribution Checklist

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- [x] The code builds clean without any errors or warnings
- [x] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [x] All unit tests pass, and I have added new tests where possible
- [x] I didn't break anyone 😄

Author: eavanvalkenburg

python/pyproject.toml

@@ -124,7 +124,7 @@ usearch = [
     "pyarrow >= 12.0,< 20.0"
 ]
 weaviate = [
-    "weaviate-client>=4.10,<4.13",
+    "weaviate-client>=4.10,<5.0",
 ]
 pandas = [
     "pandas ~= 2.2"

python/samples/concepts/agents/azure_ai_agent/azure_ai_agent_as_kernel_function.py

@@ -67,7 +67,7 @@ async def main() -> None:
     # The filter is used for demonstration purposes to show the function invocation.
     kernel.add_filter("function_invocation", function_invocation_filter)
 
-    ai_agent_settings = AzureAIAgentSettings.create()
+    ai_agent_settings = AzureAIAgentSettings()
 
     async with (
         DefaultAzureCredential() as creds,

python/samples/concepts/agents/azure_ai_agent/azure_ai_agent_azure_ai_search.py

@@ -35,7 +35,7 @@
 
 
 async def main() -> None:
-    ai_agent_settings = AzureAIAgentSettings.create()
+    ai_agent_settings = AzureAIAgentSettings()
 
     async with (
         DefaultAzureCredential() as creds,

python/samples/concepts/agents/azure_ai_agent/azure_ai_agent_file_manipulation.py

@@ -18,7 +18,7 @@
 
 
 async def main() -> None:
-    ai_agent_settings = AzureAIAgentSettings.create()
+    ai_agent_settings = AzureAIAgentSettings()
 
     async with (
         DefaultAzureCredential() as creds,

python/samples/concepts/agents/azure_ai_agent/azure_ai_agent_message_callback.py

@@ -49,7 +49,7 @@ async def handle_intermediate_steps(message: ChatMessageContent) -> None:
 
 
 async def main() -> None:
-    ai_agent_settings = AzureAIAgentSettings.create()
+    ai_agent_settings = AzureAIAgentSettings()
 
     async with (
         DefaultAzureCredential() as creds,

python/samples/concepts/agents/azure_ai_agent/azure_ai_agent_message_callback_streaming.py

@@ -47,7 +47,7 @@ async def handle_streaming_intermediate_steps(message: ChatMessageContent) -> No
 
 
 async def main() -> None:
-    ai_agent_settings = AzureAIAgentSettings.create()
+    ai_agent_settings = AzureAIAgentSettings()
 
     async with (
         DefaultAzureCredential() as creds,

python/samples/concepts/agents/azure_ai_agent/azure_ai_agent_prompt_templating.py

@@ -52,7 +52,7 @@ async def invoke_agent_with_template(template_str: str, template_format: str, de
     # Configure the prompt template
     prompt_config = PromptTemplateConfig(template=template_str, template_format=template_format)
 
-    ai_agent_settings = AzureAIAgentSettings.create()
+    ai_agent_settings = AzureAIAgentSettings()
 
     async with (
         DefaultAzureCredential() as creds,

python/samples/concepts/agents/azure_ai_agent/azure_ai_agent_streaming.py

@@ -36,7 +36,7 @@ def get_item_price(
 
 
 async def main() -> None:
-    ai_agent_settings = AzureAIAgentSettings.create()
+    ai_agent_settings = AzureAIAgentSettings()
 
     async with (
         DefaultAzureCredential() as creds,

python/samples/concepts/agents/azure_ai_agent/azure_ai_agent_structured_outputs.py

@@ -35,7 +35,7 @@ class Planet(BaseModel):
 
 
 async def main():
-    ai_agent_settings = AzureAIAgentSettings.create()
+    ai_agent_settings = AzureAIAgentSettings()
     async with (
         DefaultAzureCredential() as creds,
         AzureAIAgent.create_client(

python/samples/concepts/on_your_data/azure_chat_gpt_with_data_api.py

@@ -35,7 +35,7 @@
 # }
 
 # Create the data source settings
-azure_ai_search_settings = AzureAISearchSettings.create()
+azure_ai_search_settings = AzureAISearchSettings()
 
 az_source = AzureAISearchDataSource.from_azure_ai_search_settings(azure_ai_search_settings=azure_ai_search_settings)
 extra = ExtraBody(data_sources=[az_source])