feat: ParseComment error to contain the comment

When a comment has an error then we print only a file name and the error text but not the comment that caused an error.
To make it easier to understand a problem print it.

Also change an error itself to make it easier to google.

operation.go

@@ -386,7 +386,7 @@ func (operation *Operation) ParseParamComment(commentLine string, astFile *ast.F
 			param.Schema = schema
 		}
 	default:
-		return fmt.Errorf("%s is not supported paramType", paramType)
+		return fmt.Errorf("not supported paramType: %s", paramType)
 	}
 
 	err := operation.parseParamAttribute(commentLine, objectType, refType, paramType, &param)

parser.go

@@ -1027,7 +1027,7 @@ DeclsLoop:
 				for _, comment := range astDeclaration.Doc.List {
 					err := operation.ParseComment(comment.Text, fileInfo.File)
 					if err != nil {
-						return fmt.Errorf("ParseComment error in file %s :%+v", fileInfo.Path, err)
+						return fmt.Errorf("ParseComment error in file %s for comment: '%s': %+v", fileInfo.Path, comment.Text, err)
 					}
 					if operation.State != "" && operation.State != parser.HostState {
 						continue DeclsLoop