refactor(api): restructured API for type safety, maintainability and docs generation

- These changes makes the API incombatible with previous versions
- Added new types for error handling, success responses, and health checks.
- Updated health check logic to utilize the new types for better clarity and structure.
- Refactored existing handlers to improve response consistency and error handling.
- Updated Makefile to include a new target for generating API types from Swagger.
- Updated "new agent" API to respond an encrypted cert pair

internal/route/types/http_config.go

@@ -6,6 +6,6 @@ import (
 
 type HTTPConfig struct {
 	NoTLSVerify           bool          `json:"no_tls_verify,omitempty"`
-	ResponseHeaderTimeout time.Duration `json:"response_header_timeout,omitempty"`
+	ResponseHeaderTimeout time.Duration `json:"response_header_timeout,omitempty" swaggertype:"primitive,integer"`
 	DisableCompression    bool          `json:"disable_compression,omitempty"`
 }