JS: support SAM conversion

The SAM adapter is generate on declaration site. This is different
from the JVM approach.

`external fun interface` is banned for now.

Reusing interface declaration for the adapter is a hack which
reduces code size and makes importing/exporting the adapter
effortless.

compiler/testData/codegen/box/funInterface/multimodule.kt

@@ -0,0 +1,32 @@
+// !LANGUAGE: +NewInference +FunctionalInterfaceConversion +SamConversionPerArgument +SamConversionForKotlinFunctions
+
+// IGNORE_BACKEND_FIR: JVM_IR
+// SKIP_DCE_DRIVEN
+
+// MODULE: m1
+// FILE: m1.kt
+
+fun interface I {
+    fun f(): String
+}
+
+fun rn(i: I) = i.f()
+
+inline fun rnInline(i: I) = i.f()
+
+// MODULE: m2(m1)
+// FILE: m2.kt
+
+fun rn2(f: () -> String) = rn(f)
+
+inline fun rn2Inline(noinline f: () -> String) = rnInline(f)
+
+// MODULE: main(m2)
+// FILE: main.kt
+
+fun box(): String {
+
+    if (rn2Inline { "inline" } != "inline") return "fail"
+
+    return rn2 { "OK" }
+}