add postmancollection model

packages/postman/lib/models/postman_collection.dart

@@ -0,0 +1,141 @@
+// To parse this JSON data, do
+//
+//     final postmanCollection = postmanCollectionFromJson(jsonString);
+import 'dart:convert';
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'postman_collection.freezed.dart';
+part 'postman_collection.g.dart';
+
+PostmanCollection postmanCollectionFromJsonStr(String str) =>
+    PostmanCollection.fromJson(json.decode(str));
+
+String postmanCollectionToJsonStr(PostmanCollection data) =>
+    json.encode(data.toJson());
+
+@freezed
+class PostmanCollection with _$PostmanCollection {
+  const factory PostmanCollection({
+    Info? info,
+    List<Item>? item,
+  }) = _PostmanCollection;
+
+  factory PostmanCollection.fromJson(Map<String, dynamic> json) =>
+      _$PostmanCollectionFromJson(json);
+}
+
+@freezed
+class Info with _$Info {
+  const factory Info({
+    String? postmanId,
+    String? name,
+    String? schema,
+    String? exporterId,
+  }) = _Info;
+
+  factory Info.fromJson(Map<String, dynamic> json) => _$InfoFromJson(json);
+}
+
+@freezed
+class Item with _$Item {
+  const factory Item({
+    String? name,
+    Request? request,
+    List<dynamic>? response,
+  }) = _Item;
+
+  factory Item.fromJson(Map<String, dynamic> json) => _$ItemFromJson(json);
+}
+
+@freezed
+class Request with _$Request {
+  const factory Request({
+    String? method,
+    List<Header>? header,
+    Body? body,
+    Url? url,
+  }) = _Request;
+
+  factory Request.fromJson(Map<String, dynamic> json) =>
+      _$RequestFromJson(json);
+}
+
+@freezed
+class Header with _$Header {
+  const factory Header({
+    String? key,
+    String? value,
+    String? type,
+    bool? disabled,
+  }) = _Header;
+
+  factory Header.fromJson(Map<String, dynamic> json) => _$HeaderFromJson(json);
+}
+
+@freezed
+class Url with _$Url {
+  const factory Url({
+    String? raw,
+    String? protocol,
+    List<String>? host,
+    List<String>? path,
+    List<Query>? query,
+  }) = _Url;
+
+  factory Url.fromJson(Map<String, dynamic> json) => _$UrlFromJson(json);
+}
+
+@freezed
+class Query with _$Query {
+  const factory Query({
+    String? key,
+    String? value,
+    bool? disabled,
+  }) = _Query;
+
+  factory Query.fromJson(Map<String, dynamic> json) => _$QueryFromJson(json);
+}
+
+@freezed
+class Body with _$Body {
+  const factory Body({
+    String? mode,
+    String? raw,
+    Options? options,
+    List<Formdatum>? formdata,
+  }) = _Body;
+
+  factory Body.fromJson(Map<String, dynamic> json) => _$BodyFromJson(json);
+}
+
+@freezed
+class Options with _$Options {
+  const factory Options({
+    Raw? raw,
+  }) = _Options;
+
+  factory Options.fromJson(Map<String, dynamic> json) =>
+      _$OptionsFromJson(json);
+}
+
+@freezed
+class Raw with _$Raw {
+  const factory Raw({
+    String? language,
+  }) = _Raw;
+
+  factory Raw.fromJson(Map<String, dynamic> json) => _$RawFromJson(json);
+}
+
+@freezed
+class Formdatum with _$Formdatum {
+  const factory Formdatum({
+    String? key,
+    String? value,
+    String? type,
+    String? src,
+  }) = _Formdatum;
+
+  factory Formdatum.fromJson(Map<String, dynamic> json) =>
+      _$FormdatumFromJson(json);
+}