Auto-generate vendor ramdisk and boot image

They both still have a number of deficiences vs the make-built ones,
but this is a start.

Bug: 377563622
Test: Presubmits
Change-Id: If3329ae44633b00a8c2c2d15e3574087f74efe88
diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index c346770..e4ce0e0 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -689,6 +689,7 @@
 	"odm_dlkm",
 	"system_dlkm",
 	"ramdisk",
+	"vendor_ramdisk",
 }
 
 func (f *filesystem) addMakeBuiltFiles(ctx android.ModuleContext, builder *android.RuleBuilder, rootDir android.Path) {