refactor: split up core into multiple modules

api/shared/build.gradle.kts

@@ -0,0 +1,50 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+plugins {
+    alias(libs.plugins.androidLibrary)
+    alias(libs.plugins.kotlinMultiplatform)
+    alias(libs.plugins.kotlinSerialization)
+}
+
+kotlin {
+    jvm()
+    androidTarget {
+        compilerOptions {
+            jvmTarget.set(JvmTarget.JVM_11)
+        }
+    }
+
+    sourceSets {
+        commonMain.dependencies {
+            implementation(libs.kotlinx.serialization.json)
+        }
+    }
+}
+
+dependencies {
+    coreLibraryDesugaring(libs.desugar)
+}
+
+android {
+    namespace = "moe.lava.neon.api"
+    compileSdk = libs.versions.android.compileSdk.get().toInt()
+
+    defaultConfig {
+        minSdk = libs.versions.android.minSdk.get().toInt()
+    }
+    packaging {
+        resources {
+            excludes += "/META-INF/{AL2.0,LGPL2.1}"
+        }
+    }
+    buildTypes {
+        getByName("release") {
+            isMinifyEnabled = false
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+        isCoreLibraryDesugaringEnabled = true
+    }
+}