[FIR] Create session component with registered checkers

compiler/fir/java/build.gradle.kts

@@ -8,6 +8,7 @@ dependencies {
     compile(project(":compiler:frontend.common"))
     compile(project(":compiler:frontend.java"))
     compile(project(":compiler:fir:resolve"))
+    compile(project(":compiler:fir:checkers"))
     implementation(project(":compiler:fir:jvm"))
 
     compileOnly(intellijCoreDep()) { includeJars("intellij-core") }

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/FirJavaModuleBasedSession.kt

@@ -14,6 +14,7 @@ import org.jetbrains.kotlin.fir.FirModuleBasedSession
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.FirSessionBase
 import org.jetbrains.kotlin.fir.FirSessionProvider
+import org.jetbrains.kotlin.fir.analysis.CheckersComponent
 import org.jetbrains.kotlin.fir.extensions.FirExtensionsService
 import org.jetbrains.kotlin.fir.java.deserialization.KotlinDeserializedJvmSymbolsProvider
 import org.jetbrains.kotlin.fir.resolve.FirProvider
@@ -68,6 +69,11 @@ class FirJavaModuleBasedSession(
             JvmCallConflictResolverFactory
         )
 
+        registerComponent(
+            CheckersComponent::class,
+            CheckersComponent.componentWithDefaultCheckers()
+        )
+
         Extensions.getArea(sessionProvider.project)
             .getExtensionPoint(PsiElementFinder.EP_NAME)
             .registerExtension(FirJavaElementFinder(this, sessionProvider.project))