Rename system/core/rootdir/Android.mk to create_root_structure.mk

Since Soong currently doesn't support the `install_directory`
functionality, this file cannot be directly converted to Android.bp.
Moreover, the main content of `system/core/rootdir/Android.mk` is to
create directories and symlinks for the root file system. Therefore,
we'll first rename it and move it to build/core/main.mk for handling.

In addition, consolidate the handling of `meta-lic` related parts into
build/core/tasks/meta-lic.mk.

Bug: 353642907
Test: m -j init.environ.rc
Change-Id: I356c4b05c56b02b0243c12dbeddd4653ba4e137c
diff --git a/rootdir/Android.mk b/rootdir/create_root_structure.mk
similarity index 98%
rename from rootdir/Android.mk
rename to rootdir/create_root_structure.mk
index ac9ca85..1daf239 100644
--- a/rootdir/Android.mk
+++ b/rootdir/create_root_structure.mk
@@ -1,7 +1,5 @@
 LOCAL_PATH:= $(call my-dir)
 
-$(eval $(call declare-1p-copy-files,system/core/rootdir,))
-
 #######################################
 ifneq ($(filter address,$(SANITIZE_TARGET)),)
 ASAN_EXTRACT_FILES :=