CLI: add -Xuse-ir-fake-override-builder

To be able to test IR fake override builder (KT-61514) outside of
compiler tests.

compiler/cli/cli-common/gen/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArgumentsCopyGenerated.kt

@@ -82,6 +82,7 @@ fun copyCommonCompilerArguments(from: CommonCompilerArguments, to: CommonCompile
     to.useFirExtendedCheckers = from.useFirExtendedCheckers
     to.useFirIC = from.useFirIC
     to.useFirLT = from.useFirLT
+    to.useIrFakeOverrideBuilder = from.useIrFakeOverrideBuilder
     to.useK2 = from.useK2
     to.useMixedNamedArguments = from.useMixedNamedArguments
     to.verbosePhases = from.verbosePhases?.copyOf()

compiler/cli/cli-common/gen/org/jetbrains/kotlin/cli/common/arguments/K2NativeCompilerArgumentsCopyGenerated.kt

@@ -105,4 +105,4 @@ fun copyK2NativeCompilerArguments(from: K2NativeCompilerArguments, to: K2NativeC
     to.workerExceptionHandling = from.workerExceptionHandling
 
     return to
-}
+}

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt

@@ -542,6 +542,16 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
             field = value
         }
 
+    @Argument(
+        value = "-Xuse-ir-fake-override-builder",
+        description = "Generate fake overrides via IR. See KT-61514"
+    )
+    var useIrFakeOverrideBuilder = false
+        set(value) {
+            checkFrozen()
+            field = value
+        }
+
     @Argument(
         value = "-Xdisable-ultra-light-classes",
         description = "Do not use the ultra light classes implementation"