Define modules for linker config

Define modules for linker config and implement config string generator
for each modules.

Bug: 123722631
Test: m -j && atest linkerconfig_modules_unittest
Change-Id: Id9a234830c381267c23ec7af657f354d51a58889
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..41f7379
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,5 @@
+kiyoungkim@google.com
+danalbert@google.com
+enh@google.com
+jiyong@google.com
+rprichard@google.com
\ No newline at end of file