Migrate neverallow tests to Android.bp

A new module type se_neverallow_test is added, to migrate
sepolicy_neverallow modules. se_neverallow_test is affected by
SELINUX_IGNORE_NEVERALLOWS.

Bug: 33691272
Test: m selinux_policy
Test: intentionally create neverallow violations and m selinux_policy
Change-Id: I1582353f99f064ff78f3c547a0c13f2b772d54df
diff --git a/build/soong/Android.bp b/build/soong/Android.bp
index e3b6541..ea11e1f 100644
--- a/build/soong/Android.bp
+++ b/build/soong/Android.bp
@@ -36,6 +36,7 @@
         "cil_compat_map.go",
         "compat_cil.go",
         "filegroup.go",
+        "neverallow_test.go",
         "policy.go",
         "selinux.go",
         "selinux_contexts.go",