chore: migrate android gradle to declarative config syntax

.fvm/fvm_config.json

@@ -1,4 +1,4 @@
 {
-  "flutterSdkVersion": "3.22.0",
+  "flutterSdkVersion": "3.22.1",
   "flavors": {}
 }

.github/workflows/pr-lint.yml

@@ -4,7 +4,7 @@ on:
   pull_request:
 
 env:
-  FLUTTER_VERSION: '3.19.5'
+  FLUTTER_VERSION: '3.22.1'
 
 jobs:
   lint:

.github/workflows/spotube-release-binary.yml

@@ -20,7 +20,7 @@ on:
         description: Dry run without uploading to release
 
 env:
-  FLUTTER_VERSION: 3.22.0
+  FLUTTER_VERSION: 3.22.1
 
 permissions:
   contents: write

android/app/build.gradle

@@ -1,3 +1,9 @@
+plugins {
+    id "com.android.application"
+    id "kotlin-android"
+    id "dev.flutter.flutter-gradle-plugin"
+}
+
 def localProperties = new Properties()
 def localPropertiesFile = rootProject.file('local.properties')
 if (localPropertiesFile.exists()) {
@@ -6,11 +12,6 @@ if (localPropertiesFile.exists()) {
     }
 }
 
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
 def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
 if (flutterVersionCode == null) {
     flutterVersionCode = '1'
@@ -21,10 +22,6 @@ if (flutterVersionName == null) {
     flutterVersionName = '1.0'
 }
 
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
 def keystoreProperties = new Properties()
 def keystorePropertiesFile = rootProject.file('key.properties')
 if (keystorePropertiesFile.exists()) {
@@ -71,6 +68,9 @@ android {
         release {
             signingConfig signingConfigs.release
         }
+        debug {
+            signingConfig signingConfigs.release
+        }
     }
 
     flavorDimensions "default"
@@ -81,16 +81,19 @@ android {
             resValue "string", "app_name_en", "Spotube Nightly"
             applicationIdSuffix ".nightly"
             versionNameSuffix "-nightly"
+            signingConfig signingConfigs.release
         }
         dev {
             dimension "default"
             resValue "string", "app_name_en", "Spotube Dev"
             applicationIdSuffix ".dev"
             versionNameSuffix "-dev"
+            signingConfig signingConfigs.release
         }
         stable {
             dimension "default"
             resValue "string", "app_name_en", "Spotube"
+            signingConfig signingConfigs.release
         }
     }
 
@@ -101,15 +104,6 @@ flutter {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-    constraints {
-        implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version") {
-            because("kotlin-stdlib-jdk7 is now a part of kotlin-stdlib")
-        }
-        implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version") {
-            because("kotlin-stdlib-jdk8 is now a part of kotlin-stdlib")
-        }
-    }
     implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1'
 
     // other deps so just ignore

android/build.gradle

@@ -1,16 +1,3 @@
-buildscript {
-    ext.kotlin_version = '1.8.22'
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:7.2.1'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
-}
-
 allprojects {
     repositories {
         google()

android/settings.gradle

@@ -1,11 +1,25 @@
-include ':app'
+pluginManagement {
+    def flutterSdkPath = {
+        def properties = new Properties()
+        file("local.properties").withInputStream { properties.load(it) }
+        def flutterSdkPath = properties.getProperty("flutter.sdk")
+        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+        return flutterSdkPath
+    }()
 
-def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
-def properties = new Properties()
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
 
-assert localPropertiesFile.exists()
-localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
 
-def flutterSdkPath = properties.getProperty("flutter.sdk")
-assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
-apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+plugins {
+    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
+    id "com.android.application" version "7.2.1" apply false
+    id "org.jetbrains.kotlin.android" version "1.8.22" apply false
+}
+
+include ":app"

lib/themes/theme.dart

@@ -29,7 +29,6 @@ ThemeData theme(Color seed, Brightness brightness, bool isAmoled) {
       scrolledUnderElevation: 0,
       shadowColor: Colors.transparent,
       elevation: 0,
-      backgroundColor: Colors.transparent,
     ),
     inputDecorationTheme: InputDecorationTheme(
       border: OutlineInputBorder(