[Test] Migrate tests of foreign annotations to new infrastructure

This commit includes:
- test runners for foreign annotation tests
- minor changes testdata related to changed directives syntax
- dropping tests with javac integration: old javac tests actually ran
    compiler without javac because of bug in configuration, so some
    nullability annotations features are not supported in javac mode.
    It's fine to drop it since javac mode is not fully supported
    by compiler

compiler/testData/foreignAnnotations/java8Tests/jspecify/java/WildcardsWithDefault.java

@@ -0,0 +1,33 @@
+import org.jspecify.annotations.*;
+
+@DefaultNonNull
+public class WildcardsWithDefault {
+    public void noBoundsNotNull(A<?, ?, ?> a) {}
+    public void noBoundsNullable(A<@Nullable ?, @Nullable ?, @Nullable ?> a) {}
+}
+
+class A <T extends Object, E extends @Nullable Object, F extends @NullnessUnspecified Object> {}
+
+@DefaultNonNull
+class Use {
+    public static void main(
+            A<Object, Object, Object> aNotNullNotNullNotNull,
+            A<Object, Object, @Nullable Object> aNotNullNotNullNull,
+            A<Object, @Nullable Object, Object> aNotNullNullNotNull,
+            A<Object, @Nullable Object, @Nullable Object> aNotNullNullNull,
+            WildcardsWithDefault b
+    ) {
+        // jspecify_nullness_mismatch
+        b.noBoundsNotNull(aNotNullNotNullNotNull);
+        b.noBoundsNotNull(aNotNullNotNullNull);
+        // jspecify_nullness_mismatch
+        b.noBoundsNotNull(aNotNullNullNotNull);
+        // jspecify_nullness_mismatch
+        b.noBoundsNotNull(aNotNullNullNull);
+
+        b.noBoundsNullable(aNotNullNotNullNotNull);
+        b.noBoundsNullable(aNotNullNotNullNull);
+        b.noBoundsNullable(aNotNullNullNotNull);
+        b.noBoundsNullable(aNotNullNullNull);
+    }
+}