[FIR Test] Migrate AbstractFirLoadCompiledKotlin to new test infrastructure

Also introduce two different modes for those tests:
- load metadata compiled with K1
- load metadata compiled with K2

compiler/testData/loadJava/compiledKotlin/nestedClasses/deepInnerGeneric.fir.txt

@@ -0,0 +1,23 @@
+public final class A<TA> : R|kotlin/Any| {
+    public constructor<TA>(): R|test/A<TA>|
+
+    public final inner class B<TB, TA> : R|kotlin/Any| {
+        public test/A<TA>.constructor<TB>(): R|test/A.B<TB, TA>|
+
+        public final inner class C<TC, TB, TA> : R|kotlin/Any| {
+            public test/A.B<TB, TA>.constructor<TC>(): R|test/A.B.C<TC, TB, TA>|
+
+            public final inner class D<TD, TC, TB, TA> : R|kotlin/Any| {
+                public final fun bar(ta: R|TA|, tb: R|TB|, tc: R|TC|, td: R|TD|): R|test/A.B.C.D<TD, TC, TB, TA>|
+
+                public final fun <P1, P2, P3, P4> foo(p1: R|P1|, p2: R|P2|, p3: R|P3|, p4: R|P4|): R|kotlin/Nothing|
+
+                public test/A.B.C<TC, TB, TA>.constructor<TD>(): R|test/A.B.C.D<TD, TC, TB, TA>|
+
+            }
+
+        }
+
+    }
+
+}

compiler/testData/loadJava/compiledKotlin/nestedClasses/innerClassReferencesOuterTP.fir.txt

@@ -0,0 +1,9 @@
+public final class InnerClassReferencesOuterTP<P> : R|kotlin/Any| {
+    public constructor<P>(): R|test/InnerClassReferencesOuterTP<P>|
+
+    public final inner class Inner<Q : R|P|, P> : R|kotlin/Any| {
+        public test/InnerClassReferencesOuterTP<P>.constructor<Q : R|P|>(): R|test/InnerClassReferencesOuterTP.Inner<Q, P>|
+
+    }
+
+}

compiler/testData/loadJava/compiledKotlin/nestedClasses/membersReferenceOuterTP.fir.txt

@@ -0,0 +1,19 @@
+public final class MembersReferenceOuterTP<P> : R|kotlin/Any| {
+    public constructor<P>(): R|test/MembersReferenceOuterTP<P>|
+
+    public final inner class Inner<P> : R|kotlin/Any| {
+        public final fun <Q : R|P|> f(): R|kotlin/Unit|
+
+        public final fun g(p: R|P|): R|P|
+
+        public final val v: R|P|
+            public get(): R|P|
+
+        public final val <Q : R|P|> R|Q|.w: R|Q|
+            public get(): R|Q|
+
+        public test/MembersReferenceOuterTP<P>.constructor(): R|test/MembersReferenceOuterTP.Inner<P>|
+
+    }
+
+}