Add functional folder for vts 1.4.

New tests would be added in cpp files under functional folder. Add a new
folder since it doesn't exist for 1.4 yet.

Test: Compilation
Change-Id: Ieac30bbbc865b76a08d4bdd655f0d489bb7f77bd
Bug: 73784494
diff --git a/radio/1.4/vts/OWNERS b/radio/1.4/vts/OWNERS
new file mode 100644
index 0000000..fd69f36
--- /dev/null
+++ b/radio/1.4/vts/OWNERS
@@ -0,0 +1,8 @@
+# Telephony team
+amitmahajan@google.com
+shuoq@google.com
+sasindran@google.com
+
+# VTS team
+yuexima@google.com
+yim@google.com
\ No newline at end of file