[JS IR] Add to IR keep possibility similar to legacy-dce one

It helps to:

- keep declarations even if they are not reachable and not exported
- not minify names of not exported declarations

Compiler argument: -Xir-keep=A,B

Can be used for top-level declarations or for member

^KT-54118 fixed

plugins/scripting/scripting-compiler-js/src/org/jetbrains/kotlin/scripting/js/JsCoreScriptingCompiler.kt

@@ -92,7 +92,8 @@ class JsCoreScriptingCompiler(
             psi2irContext.irBuiltIns,
             psi2irContext.symbolTable,
             irModuleFragment,
-            emptySet(),
+            additionalExportedDeclarationNames = emptySet(),
+            keep = emptySet(),
             environment.configuration,
             true
         )

plugins/scripting/scripting-compiler-js/src/org/jetbrains/kotlin/scripting/js/JsScriptDependencyCompiler.kt

@@ -62,7 +62,8 @@ class JsScriptDependencyCompiler(
             irBuiltIns,
             symbolTable,
             moduleFragment,
-            emptySet(),
+            additionalExportedDeclarationNames = emptySet(),
+            keep = emptySet(),
             configuration,
             true
         )