Rework to use KUKSA.val databroker gRPC API

Rework to move from the WebSocket API with the older KUKSA.val
server to the gRPC "VAL" API of the databroker.

Changes include:
- All VISS WebSocket API code has been removed, and the signal
  providers replumbed to be driven by a new VssClient class with
  a homescreen-specific child class to hold all the gRPC API
  handling.
- The generated code for the VAL API and its dependencies has
  been checked in under lib/generated, as there still does not
  seem to be a good way to generate it during the Flutter build.
- The configuration file is now expected to be "homescreen.yaml"
  instead of "homescreen_config.yaml".  The authorization token
  field name has been renamed to "authorization", and there are
  new "use-tls" and "ca-certificate" configuration fields.  TLS
  is disabled by default for now, and the default CA certificate
  is /etc/kuksa.val/CA.pem.
- Updated .gitignore to cover a couple of generated files that
  weren't included.

Bug-AGL: SPEC-4762, SPEC-4903

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I1b95ed27a72435364d54ec846f2be88e3d8bb092

1 files changed, 3 insertions, 6 deletions

diff --git a/lib/main.dart b/lib/main.dart
index f5ea0f7..455f54b 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -2,17 +2,14 @@ import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:flutter_homescreen/homescreen.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:flutter_homescreen/vehicle-signals/viss_config.dart';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  HttpClient client = await initializeClient();
-  runApp(ProviderScope(child: MyApp(client: client)));
+  runApp(ProviderScope(child: MyApp()));
 }
 
 class MyApp extends ConsumerWidget {
-  MyApp({Key? key, required this.client}) : super(key: key);
-  final HttpClient client;
+  MyApp({Key? key}) : super(key: key);
 
   // This widget is the root of your application.
   @override
@@ -32,7 +29,7 @@ class MyApp extends ConsumerWidget {
               color: navBarIconColor,
             ))),
       ),
-      home: Homescreen(client: client),
+      home: Homescreen(),
     );
   }
 }