Introduce FlexiblePhaseConfig

For dynamic Kotlin/Native driver we need a PhaseConfigurationService
that does not force us to provide a list of phases upfront.

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/phaser/FlexiblePhaseConfig.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.backend.common.phaser
+
+/**
+ * Phase configuration that does not know anything
+ * about actual compiler pipeline upfront.
+ */
+class FlexiblePhaseConfig(
+    disabled: Set<String>,
+    private val verbose: Set<String>,
+    private val toDumpStateBefore: Set<String>,
+    private val toDumpStateAfter: Set<String>,
+    private val toValidateStateBefore: Set<String>,
+    private val toValidateStateAfter: Set<String>,
+    override val dumpToDirectory: String? = null,
+    override val dumpOnlyFqName: String? = null,
+    override val needProfiling: Boolean = false,
+    override val checkConditions: Boolean = false,
+    override val checkStickyConditions: Boolean = false
+) : PhaseConfigurationService {
+    private val disabledMut = disabled.toMutableSet()
+
+    override fun isEnabled(phase: AnyNamedPhase): Boolean =
+        phase.name !in disabledMut
+
+    override fun isVerbose(phase: AnyNamedPhase): Boolean =
+        phase.name in verbose
+
+    override fun disable(phase: AnyNamedPhase) {
+        disabledMut += phase.name
+    }
+
+    override fun shouldDumpStateBefore(phase: AnyNamedPhase): Boolean =
+        phase.name in toDumpStateBefore
+
+    override fun shouldDumpStateAfter(phase: AnyNamedPhase): Boolean =
+        phase.name in toDumpStateAfter
+
+    override fun shouldValidateStateBefore(phase: AnyNamedPhase): Boolean =
+        phase.name in toValidateStateBefore
+
+    override fun shouldValidateStateAfter(phase: AnyNamedPhase): Boolean =
+        phase.name in toValidateStateAfter
+}