Fix local anonymous class name error in K2MetadataCompiler

Extract the logic of approximating to denotable class supertype
from JS/KLIB and use it in metadata compiler.

^KT-20996 In Progress

compiler/testData/compileKotlinAgainstCustomBinaries/anonymousObjectTypeMetadata/anonymousObjectTypeMetadata.kt

@@ -0,0 +1,13 @@
+package test
+
+import lib.*
+
+val w = W()
+val v1 = fn()
+val v2 = O.o()
+val v3 = w.w()
+
+// private
+val e1 = o3
+val e2 = w.o7
+val e3 = O.o10

compiler/testData/compileKotlinAgainstCustomBinaries/anonymousObjectTypeMetadata/library/privateObjects.kt

@@ -0,0 +1,125 @@
+package lib
+
+interface I1 {
+    fun i1() {}
+}
+
+interface I2 {
+    fun i2() {}
+}
+
+interface I3 : I2, I1
+
+open class C {
+    fun c() {}
+}
+
+open class G<T> {
+    fun g() {}
+}
+
+private val o1 = object { fun foo() {} }
+private val o2 = object : I1 {}
+private val o3 = object : I1, I2 {}
+private val o4 = object : I3 {}
+private val o5 = object : C() {}
+private val o6 = object : C(), I1, I2 {}
+private val o7 = object : C(), I3 {}
+private val o8 = object : G<Int>() {}
+private val o9 = object : G<Int>(), I1, I2 {}
+private val o10 = object : G<Int>(), I3 {}
+
+fun fn() {
+    o1.foo()
+    o2.i1()
+    o3.i1()
+    o3.i2()
+    o4.i1()
+    o4.i2()
+    o5.c()
+    o6.c()
+    o6.i1()
+    o6.i2()
+    o7.c()
+    o7.i1()
+    o7.i2()
+    o8.g()
+    o9.g()
+    o9.i1()
+    o9.i2()
+    o10.g()
+    o10.i1()
+    o10.i2()
+}
+
+class W {
+    private val o1 = object { fun foo() {} }
+    private val o2 = object : I1 {}
+    private val o3 = object : I1, I2 {}
+    private val o4 = object : I3 {}
+    private val o5 = object : C() {}
+    private val o6 = object : C(), I1, I2 {}
+    private val o7 = object : C(), I3 {}
+    private val o8 = object : G<Int>() {}
+    private val o9 = object : G<Int>(), I1, I2 {}
+    private val o10 = object : G<Int>(), I3 {}
+
+    fun w() {
+        o1.foo()
+        o2.i1()
+        o3.i1()
+        o3.i2()
+        o4.i1()
+        o4.i2()
+        o5.c()
+        o6.c()
+        o6.i1()
+        o6.i2()
+        o7.c()
+        o7.i1()
+        o7.i2()
+        o8.g()
+        o9.g()
+        o9.i1()
+        o9.i2()
+        o10.g()
+        o10.i1()
+        o10.i2()
+    }
+}
+
+object O {
+    private val o1 = object { fun foo() {} }
+    private val o2 = object : I1 {}
+    private val o3 = object : I1, I2 {}
+    private val o4 = object : I3 {}
+    private val o5 = object : C() {}
+    private val o6 = object : C(), I1, I2 {}
+    private val o7 = object : C(), I3 {}
+    private val o8 = object : G<Int>() {}
+    private val o9 = object : G<Int>(), I1, I2 {}
+    private val o10 = object : G<Int>(), I3 {}
+
+    fun o() {
+        o1.foo()
+        o2.i1()
+        o3.i1()
+        o3.i2()
+        o4.i1()
+        o4.i2()
+        o5.c()
+        o6.c()
+        o6.i1()
+        o6.i2()
+        o7.c()
+        o7.i1()
+        o7.i2()
+        o8.g()
+        o9.g()
+        o9.i1()
+        o9.i2()
+        o10.g()
+        o10.i1()
+        o10.i2()
+    }
+}

compiler/testData/compileKotlinAgainstCustomBinaries/anonymousObjectTypeMetadata/output.txt

@@ -0,0 +1,10 @@
+compiler/testData/compileKotlinAgainstCustomBinaries/anonymousObjectTypeMetadata/anonymousObjectTypeMetadata.kt:11:10: error: cannot access 'o3': it is private in file
+val e1 = o3
+         ^
+compiler/testData/compileKotlinAgainstCustomBinaries/anonymousObjectTypeMetadata/anonymousObjectTypeMetadata.kt:12:12: error: cannot access 'o7': it is private in 'W'
+val e2 = w.o7
+           ^
+compiler/testData/compileKotlinAgainstCustomBinaries/anonymousObjectTypeMetadata/anonymousObjectTypeMetadata.kt:13:12: error: cannot access 'o10': it is private in 'O'
+val e3 = O.o10
+           ^
+COMPILATION_ERROR