JvmName annotation support, single-file facade case (just rename file facade class)

- initial implementation of JvmFileClassesProvider
- migrate some of PackagePartClassUtil usages to JvmFileClassesProvider (mostly in Codegen)
- placeholder ("no resolve") implementation for migration period and unclear cases
- tests

compiler/testData/cli/jvm/classAndFileClassClash.out

@@ -0,0 +1,7 @@
+compiler/testData/cli/jvm/classAndFileClassClash.kt:1:1: error: duplicate JVM class name 'test/Foo' generated from: package-fragment test, Foo
+@file:jvmName("Foo")
+^
+compiler/testData/cli/jvm/classAndFileClassClash.kt:6:1: error: duplicate JVM class name 'test/Foo' generated from: package-fragment test, Foo
+class Foo {}
+^
+COMPILATION_ERROR