refactor: Move source-api to source directory

Preparing to split local source to its own module

source-api/build.gradle.kts

@@ -1,44 +0,0 @@
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-
-plugins {
-    alias(androidx.plugins.library)
-    alias(kotlinx.plugins.multiplatform)
-    alias(kotlinx.plugins.serialization)
-}
-
-kotlin {
-    androidTarget()
-    sourceSets {
-        val commonMain by getting {
-            dependencies {
-                api(kotlinx.serialization.json)
-                api(libs.injekt.core)
-                api(libs.rxjava)
-                api(libs.jsoup)
-            }
-        }
-        val androidMain by getting {
-            dependencies {
-                implementation(projects.core)
-                api(androidx.preference)
-
-                // Workaround for https://youtrack.jetbrains.com/issue/KT-57605
-                implementation(kotlinx.coroutines.android)
-                implementation(project.dependencies.platform(kotlinx.coroutines.bom))
-            }
-        }
-    }
-}
-android {
-    namespace = "eu.kanade.tachiyomi.source"
-    defaultConfig {
-        consumerProguardFile("consumer-proguard.pro")
-    }
-}
-tasks {
-    withType<KotlinCompile> {
-        compilerOptions.freeCompilerArgs.addAll(
-            "-Xexpect-actual-classes",
-        )
-    }
-}