[SLC] Support generics and ignore whitespace in KtSuperTypeList.findEntry

compiler/testData/asJava/lightClasses/lightClassByPsi/unresolvedGenericSupertypes.java

@@ -0,0 +1,7 @@
+public final class C1 /* C1*/ extends Super<T, U> implements Intf1<A, B>, Intf2<X, Y<Z>> {
+  public  C1();//  .ctor()
+}
+
+public final class C2 /* C2*/ extends com.example.Super<T, U> implements com.example.Intf1<A, B>, com.example.Intf2<X, Y<Z>> {
+  public  C2();//  .ctor()
+}

compiler/testData/asJava/lightClasses/lightClassByPsi/unresolvedGenericSupertypes.kt

@@ -0,0 +1,9 @@
+public class C1: Intf1 < A , B >, Super < T , U >(42),
+    Intf2 < X ,
+            Y < Z >>
+
+public class C2: com . example . Intf1 < A , B >, com . example . Super < T , U >(42),
+    com . example . Intf2 < X ,
+            Y < Z >>
+
+// COMPILATION_ERRORS