Fixes for tool/generate_pubspec.dart. Add pubspec into .gitignore

.gitignore

@@ -119,5 +119,11 @@ lib/monero/monero.dart
 
 ios/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_180.png
 ios/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_120.png
-android/app/src/main/res/
+android/app/src/main/res/mipmap-*
+android/app/src/main/res/drawable/ic_launcher.png
+!android/app/src/main/res/drawable/launch_background.xml 
+!android/app/src/main/res/values/styles.xml
 assets/images/app_logo.png
+
+/pubspec.yaml
+/pubspec.lock

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@android:color/white" />
-    <foreground android:drawable="@drawable/ic_launcher" />
-</adaptive-icon>

pubspec.lock

@@ -1,5 +0,0 @@
-# Generated by pub
-# See https://dart.dev/tools/pub/glossary#lockfile
-packages: {}
-sdks:
-  dart: ">=2.7.0 <3.0.0"

pubspec.yaml

@@ -1,6 +0,0 @@
-name: cake_wallet
-description: Cake Wallet.
-version: 0.0.0
-
-environment:
-  sdk: ">=2.7.0 <3.0.0"

tool/generate_pubspec.dart

@@ -9,7 +9,7 @@ Future<void> main(List<String> args) async {
   final pubspecDescription = File(pubspecDescriptionPath);
 
   if (!pubspecBase.existsSync() || !pubspecDescription.existsSync()) {
-    throw('$pubspecBasePath or $pubspecDescriptionPath doesn't exists');
+    throw("$pubspecBasePath or $pubspecDescriptionPath doesn't exists");
   }
 
   final pubspecBaseContent = await pubspecBase.readAsString();