Make ErrorHandlingMiddleware initializer public

Author: Gayathri Sairamkrishnan

Sources/OpenAPIRuntime/Interface/ErrorHandlingMiddleware.swift

@@ -45,6 +45,18 @@ import HTTPTypes
 /// It should be determined based on the specific needs of each application.
 /// Consider the order of execution and dependencies between middlewares.
 public struct ErrorHandlingMiddleware: ServerMiddleware {
+    
+    /// Creates an ErrorHandlingMiddleware
+    public init() {}
+    
+    /// Intercepts an outgoing HTTP request and an incoming HTTP Response, and converts errors(if any) that confirms to ``HTTPResponseConvertible`` to an HTTP response.
+    /// - Parameters:
+    ///   - request: The HTTP request created during the operation.
+    ///   - body: The HTTP request body created during the operation.
+    ///   - metadata: Request metadata
+    ///   - operationID: The OpenAPI operation identifier.
+    ///   - next: A closure that calls the next middleware, or the transport.
+    /// - Returns: An HTTPResponse and an optional HTTPBody.
     public func intercept(
         _ request: HTTPTypes.HTTPRequest,
         body: OpenAPIRuntime.HTTPBody?,
@@ -66,14 +78,13 @@ public struct ErrorHandlingMiddleware: ServerMiddleware {
     }
 }
 
-/// A protocol used by ``ErrorHandlingMiddleware`` to map an error to an `HTTPResponse` and ``HTTPBody``.
+/// A protocol used by ``ErrorHandlingMiddleware`` to map an error to an ``HTTPResponse`` and ``HTTPBody``.
 /// Adopters who wish to convert their application error to an `HTTPResponse` and ``HTTPBody`` should conform the error type to this protocol.
 public protocol HTTPResponseConvertible {
 
     /// An HTTP status to return in the response.
     var httpStatus: HTTPResponse.Status { get }
     /// The HTTP headers of the response.
-    ///
     /// This is optional as default values are provided in the extension.
     var httpHeaderFields: HTTPTypes.HTTPFields { get }
     /// The body of the HTTP response.