FIR: implements multi-module resolve, add tests #KT-24093 Fixed

This commit introduces FIR session provider, dependency provider,
library session + other infrastructure necessary for multi-module resolve

compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirSession.kt

@@ -11,11 +11,17 @@ import kotlin.reflect.KClass
 interface FirSession {
     val moduleInfo: ModuleInfo?
 
+    val sessionProvider: FirSessionProvider? get() = null
+
     val components: Map<KClass<*>, Any>
 
     fun <T : Any> getService(kclass: KClass<T>): T =
         components[kclass] as T
 }
 
+interface FirSessionProvider {
+    fun getSession(moduleInfo: ModuleInfo): FirSession?
+}
+
 inline fun <reified T : Any> FirSession.service(): T =
     getService(T::class)

compiler/fir/tree/src/org/jetbrains/kotlin/fir/Utils.kt

@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.fir
 
+import org.jetbrains.kotlin.analyzer.ModuleInfo
 import org.jetbrains.kotlin.fir.visitors.FirTransformer
 
 fun <T : FirElement, D> MutableList<T>.transformInplace(transformer: FirTransformer<D>, data: D) {
@@ -31,4 +32,6 @@ fun <T : FirElement, D> MutableList<T>.transformInplace(transformer: FirTransfor
 
 fun <T : FirElement, D> T.transformSingle(transformer: FirTransformer<D>, data: D): T {
     return this.transform<T, D>(transformer, data).single
-}
+}
+
+fun ModuleInfo.dependenciesWithoutSelf(): Sequence<ModuleInfo> = dependencies().asSequence().filter { it != this }