Split out all code into modules.

tool/build.gradle.kts

@@ -0,0 +1,31 @@
+plugins {
+  application
+  pork_module
+  id("com.github.johnrengelman.shadow") version "8.1.1"
+  id("org.graalvm.buildtools.native") version "0.9.25"
+}
+
+dependencies {
+  api(project(":ast"))
+  api(project(":parser"))
+  api(project(":frontend"))
+  api(project(":evaluator"))
+  implementation(libs.clikt)
+  implementation(project(":common"))
+}
+
+application {
+  mainClass.set("gay.pizza.pork.tool.MainKt")
+}
+
+graalvmNative {
+  binaries {
+    named("main") {
+      imageName.set("pork")
+      mainClass.set("gay.pizza.pork.tool.MainKt")
+      sharedLibrary.set(false)
+    }
+  }
+}
+
+tasks.run.get().outputs.upToDateWhen { false }