feat: Enhance agent functionality with ModelProfile integration

- Added ModelProfile to the Agent record to allow for more detailed model configurations.
- Updated AgentExecutorService to utilize ModelProfile when fetching clients.
- Modified BaseAgent interface to include a default modelProfile method.
- Adjusted Client interface and implementations to support ModelProfile in conversation and streaming methods.
- Enhanced ClientService to retrieve clients based on ModelProfile.
- Updated CompletionInterceptor to work with ModelProfile instead of ModelCategory.
- Refactored AzureAiClient and other client implementations to handle ModelProfile correctly.
- Changed CachedClient to cache responses based on ModelProfile.
- Updated ModelCategory to a record type for better validation and immutability.
- Enhanced ModelProfile with validation checks for its fields.
- Updated ModelProfileService to support fetching profiles based on ModelCategory.
- Adjusted tests to accommodate changes in Agent and ModelProfile.
- Updated properties files to include category information for model profiles.

src/test/resources/llama3.3-70b-azure.properties

@@ -1,3 +1,4 @@
+category=
 prompts=
 tokenEncoding=cl100k_base
 maxTokens=1500

src/test/resources/local-chatcompletion.properties

@@ -1,3 +1,4 @@
+category=M
 prompts=
 tokenEncoding=cl100k_base
 maxTokens=2500

src/test/resources/local-completion.properties

@@ -1,3 +1,4 @@
+category=S
 prompts=gpt-oss
 tokenEncoding=cl100k_base
 maxTokens=2500