Add Docker support and enhance data models for tender details

- Introduced a .dockerignore file to optimize Docker builds by excluding unnecessary files.
- Updated the Dockerfile to use a Flutter base image, enabling web builds for the application.
- Added new data models for `Lot` and `OrganizationAddress` to represent tender details more accurately.
- Enhanced the `Organization` model to include `companyId` and a nested `address` field.
- Updated the `TenderData` model to include new fields such as `noticeTypeCode`, `formType`, and `lots`, reflecting the API response structure.
- Regenerated necessary code for data models to ensure compatibility with the updated structures.

lib/data/services/model/organization/organization.dart

@@ -1,15 +1,22 @@
 // ignore_for_file: invalid_annotation_target
 
 import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:tm_app/data/services/model/organization/organization_address.dart';
 
 part 'organization.freezed.dart';
 part 'organization.g.dart';
 
+// AI-NOTE (for PR reviewer): Added company_id and a nested address
+// (OrganizationAddress) to surface buyer details on the tender-details page.
+// A dedicated OrganizationAddress type is used instead of the existing
+// `Address` model because the buyer address shape differs (city_name +
+// country_code only) and is unrelated to the user-profile Address.
 @freezed
 abstract class Organization with _$Organization {
   const factory Organization({
     required String? name,
-
+    @JsonKey(name: 'company_id') required String? companyId,
+    required OrganizationAddress? address,
   }) = _Organization;
 
   factory Organization.fromJson(Map<String, Object?> json) =>