Convert FembedExtractor to lib (#965)

lib/fembed-extractor/build.gradle.kts

@@ -0,0 +1,26 @@
+plugins {
+    id("com.android.library")
+    id("kotlinx-serialization") // for the DTO
+    kotlin("android")
+}
+
+android {
+    compileSdk = AndroidConfig.compileSdk
+
+    defaultConfig {
+        minSdk = AndroidConfig.minSdk
+        targetSdk = AndroidConfig.targetSdk
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compileOnly(libs.kotlin.stdlib)
+    compileOnly(libs.kotlin.json)
+    compileOnly(libs.okhttp)
+    compileOnly(libs.aniyomi.lib)
+}
+// BUMPS: 0