bp2build conversion for rscript srcs in cc modules

Bazel does not support using .rscrip/.fs files as cc srcs.
For a module foo with foo srcs, Bp2build will create a bazel
target of rule class rscript_to_cpp with name foo_renderscript
which will have only the renderscript files as srcs.
Bp2build will also create a target foo with the expected cc rule class.
The foo target will have all other src files as srcs and will also
have the target foo_renderscript as another src.

Bug: 210509914
Test: bp2build testing & b build target rstest-latency
Change-Id: Ifdc55051a3595f5fcf54eab8b59e11e9351e141c
diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index 34a6860..aff7406 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -131,6 +131,7 @@
 		"external/brotli":                        Bp2BuildDefaultTrue,
 		"external/bsdiff":                        Bp2BuildDefaultTrueRecursively,
 		"external/bzip2":                         Bp2BuildDefaultTrueRecursively,
+		"external/clang/lib":                     Bp2BuildDefaultTrue,
 		"external/conscrypt":                     Bp2BuildDefaultTrue,
 		"external/e2fsprogs":                     Bp2BuildDefaultTrueRecursively,
 		"external/eigen":                         Bp2BuildDefaultTrueRecursively,
@@ -796,6 +797,13 @@
 
 		// for platform_compat_config
 		"process-compat-config",
+
+		// cc_* modules with rscript srcs
+		"rstest-latency",
+		"libRScpp_static",
+		"rs-headers",
+		"rs_script_api",
+		"libRSDispatch",
 	}
 
 	Bp2buildModuleTypeAlwaysConvertList = []string{