Add template for generating lynx vendor blobs

Also add template for factory image

TEST:generated blobs from artifacts. Flashed device

BUG: 240203789
Change-Id: If7c12b263d914af95b3bba0566a95914b60950f7

self-extractors/PART1

@@ -0,0 +1,12 @@
+#
+# Usage is subject to the enclosed license agreement
+
+echo
+echo The license for this software will now be displayed.
+echo You must agree to this license before using this software.
+echo
+echo -n Press Enter to view the license
+read dummy
+echo
+
+more << __EOF__