feat(api): major refactor from TCP socket to HTTP REST via Spring Boot

This commit introduces a large-scale refactor that replaces the existing TCP-based API with a Spring Boot-powered HTTP REST architecture. Due to the size and scope of this change, only essential structural notes are included below.

High-level changes:
- Replaced TCP-based communication with RESTful endpoints
- Introduced Spring Boot for API handling and configuration
- Refactored internal core logic to support REST architecture

New/Updated API components:
- `APIApplication.java`: Main Spring Boot entry point
- `MessageController.java`: Handles LLM-related queries
- `ToolController.java`: Handles adding/removing tools
- `NewToolRequest.java` / `NewToolResponse.java`: Data models for tool addition
- `NewQueryResponseHook.java`: Webhook handler for LLM query results
- `WebhookError.java`: Model for reporting webhook errors
- `EnableIfNotDisplay.java`: Conditional configuration for TTY context
- Other supporting classes (e.g., `ToolArgument`, `ToolRequest`)

Core changes:
- `Core.java`: Removed deprecated `addFunctionTool`, added `removeTool`
- `LaunchOptions.java`: Added `notDisplay` flag for headless operation
- `OllamaObject.java`: Implements tool removal logic

Launcher/display changes:
- `Launcher.java`: Starts `APIApplication` if not in TTY mode
- `Display.java`: Integrates REST API contextually with TTY display

NOTE: Several classes are included but not yet fully utilized; these are placeholders for upcoming features (e.g., `MessageResponse`, `ToolRequest`).

BREAKING CHANGE: This refactors removes all TCP-based API code and replaces it with HTTP REST using Spring Boot. Any clients or modules depending on the old TCP interface will need to be updated.

.gitignore

@@ -45,4 +45,5 @@ bin/
 /messages/
 /logs/
 data
-/cache/
+/cache/
+/run/