JS BE: expose imported modules via $$importsForInline$$ property

... and use it as prefix to FQN in inline functions. This allows
to properly inline function declared in module A to module B,
when this function calls another function in module C.

See KT-18201

js/js.translator/testData/box/crossModuleRef/inlineJsModule.kt

@@ -0,0 +1,25 @@
+// EXPECTED_REACHABLE_NODES: 547
+// MODULE: lib1
+// FILE: lib1.js
+define("lib1", [], function() {
+    return function() {
+        return "OK";
+    }
+})
+
+// MODULE: lib2(lib1)
+// FILE: lib2.kt
+// MODULE_KIND: AMD
+@JsModule("lib1")
+external fun foo(): String
+
+// MODULE: lib3(lib2)
+// FILE: lib3.kt
+// MODULE_KIND: AMD
+inline fun bar() = foo()
+
+// MODULE: main(lib3)
+// FILE: main.kt
+// MODULE_KIND: AMD
+
+fun box() = bar()