feat(crashlytics): add support for Pigeon. Update iOS to Swift and Android to Swift

packages/firebase_crashlytics/analysis_options.yaml

@@ -0,0 +1,10 @@
+# Copyright 2025 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# in the LICENSE file.
+
+include: ../../analysis_options.yaml
+
+analyzer:
+  exclude:
+    - firebase_crashlytics_platform_interface/lib/src/pigeon/messages.pigeon.dart
+    - firebase_crashlytics_platform_interface/test/pigeon/test_api.dart

packages/firebase_crashlytics/firebase_crashlytics/android/build.gradle

@@ -5,10 +5,16 @@ apply plugin: 'com.android.library'
 apply from: file("local-config.gradle")
 
 buildscript {
+  ext.kotlin_version = "1.8.22"
   repositories {
     google()
     mavenCentral()
   }
+
+  dependencies {
+      classpath 'com.android.tools.build:gradle:8.1.4'
+      classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
+  }
 }
 
 rootProject.allprojects {
@@ -18,6 +24,8 @@ rootProject.allprojects {
   }
 }
 
+apply plugin: 'kotlin-android'
+
 def firebaseCoreProject = findProject(':firebase_core')
 if (firebaseCoreProject == null) {
   throw new GradleException('Could not find the firebase_core FlutterFire plugin, have you added it as a dependency in your pubspec?')
@@ -44,11 +52,20 @@ android {
     testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
   }
 
+  kotlinOptions {
+    jvmTarget = JavaVersion.VERSION_17
+  }
+
   compileOptions {
     sourceCompatibility project.ext.javaVersion
     targetCompatibility project.ext.javaVersion
   }
 
+  sourceSets {
+      main.java.srcDirs += "src/main/kotlin"
+      test.java.srcDirs += "src/test/kotlin"
+  }
+
   buildFeatures {
     buildConfig = true
   }