[AA] Add symbol tests for symbols from JS klibs

Use test compiler runner to compile JS libraries. Determine compiler
by the specified TARGET_PLATFORM. Add tests for dynamic type and
JS-specific .proto extensions.

Refactor the code for mock library compilation to make the switch
between platforms more straightforward.

KTIJ-27566
KT-63217

analysis/low-level-api-fir/testData/getOrBuildFirBinary/js/constructorAnnotation.txt

@@ -0,0 +1,12 @@
+KT element: KtClass
+KT element text:
+public final class Cls @Y public constructor() {
+}
+FIR element: FirRegularClassImpl
+FIR source kind: KtRealSourceElementKind
+
+FIR element rendered:
+public final [ResolvedTo(BODY_RESOLVE)] class Cls : R|kotlin/Any| {
+    @R|Y|() public [ResolvedTo(BODY_RESOLVE)] [ContainingClassKey=Cls] constructor(): R|Cls|
+
+}