[K/N] Move IR-related ObjC interop helpers to a new common module

This is a step towards KT-61248. We need those helpers to be available
in non-Native-specific code.

compiler/ir/ir.objcinterop/build.gradle.kts

@@ -0,0 +1,19 @@
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
+
+dependencies {
+    api(project(":core:compiler.common"))
+    api(project(":compiler:ir.tree"))
+
+    implementation(project(":core:compiler.common.native"))
+
+    compileOnly(intellijCore())
+}
+
+sourceSets {
+    "main" { projectDefault() }
+}
+
+optInToIrSymbolInternals()